diff --git a/data/xml/meta.xml b/data/xml/meta.xml
index 1771fa3..a756a22 100644
--- a/data/xml/meta.xml
+++ b/data/xml/meta.xml
@@ -10,7 +10,8 @@
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="1" cert="low"  /><!-- Oder Arensburg -->
+				<location ref="1" cert="low" >oder</location>
+				<location ref="10" cert="low" /><!-- Oder Arensburg Hier zwei Orte mit cert low angeben; bald und kurz nach nur nach dem bekannten Datum eingeben; cert Attribute für Personen und Datum ergänzen; Freitextfeld einfügen; erste 7 Briefe nochmal durchgehen; Adressenleerzeilen ergänzen-->
 				<person ref="2" />
 			</received>
 			<hasOriginal value="true" />
@@ -67,7 +68,7 @@
 
 		<letterDesc letter="5">
 			<sent>
-				<date notBefore="1767-11-24" when="1767-11-24">Tarwast (Tarvastu), nach 24. Januar 1768</date>
+				<date notBefore="1767-11-24" >Tarwast (Tarvastu), nach 24. Januar 1768</date>
 				<location ref="1" />
 				<person ref="1" />
 				<person ref="7" />
@@ -99,7 +100,7 @@
 
 		<letterDesc letter="7">
 			<sent>
-				<date notBefore="1770-06-01" notAfter="1770-07-01" when="1770-06-15">Dorpat (Tartu),
+				<date notBefore="1770-06-01" notAfter="1770-07-01">Dorpat (Tartu),
 					wahrscheinlich Mitte 1770</date>
 				<location ref="1" />
 				<person ref="5" />
@@ -116,7 +117,7 @@
 
 		<letterDesc letter="8">
 			<sent>
-				<date notBefore="1772-05-15" notAfter="1772-05-30" when="1772-05-28">Fort Louis, Ende Mai
+				<date notBefore="1772-05-15" notAfter="1772-05-30">Fort Louis, Ende Mai
 					1772</date>
 				<location ref="4" />
 				<person ref="1" />
@@ -207,7 +208,7 @@
 
 		<letterDesc letter="14">
 			<sent>
-				<date notBefore="1772-08-01" notAfter="1772-08-15" when="1772-08-01">Fort Louis, Anfang August 1772</date>
+				<date notBefore="1772-08-01" notAfter="1772-08-15">Fort Louis, Anfang August 1772</date>
 				<location ref="4" />
 				<person ref="1" />
 			</sent>
@@ -222,7 +223,7 @@
 
 		<letterDesc letter="15">
 			<sent>
-				<date notBefore="1772-08-10" notAfter="1772-08-20" when="1772-08-15">Fort Louis, Mitte August 1772</date>
+				<date notBefore="1772-08-10" notAfter="1772-08-20">Fort Louis, Mitte August 1772</date>
 				<location ref="4" />
 				<person ref="1" />
 			</sent>
@@ -252,7 +253,7 @@
 
 		<letterDesc letter="17">
 			<sent>
-				<date from="1772-10-02" to="1772-10-02" when="1772-10-02">Weisenburg, 2. September und 2. Oktober 1772</date><!-- Kann from to auch verwendet werden, wenn es an zwei festen Tagen geschrieben wurde? -->
+				<date from="1772-10-02" to="1772-10-02">Weisenburg, 2. September und 2. Oktober 1772</date>
 				<location ref="6" />
 				<person ref="1" />
 			</sent>
@@ -311,7 +312,7 @@
 
 		<letterDesc letter="21">
 			<sent>
-				<date notBefore="1772-10-01" notAfter="1772-10-15" when="1772-10-05">Landau, Anfang Oktober 1772</date>
+				<date notBefore="1772-10-01" notAfter="1772-10-15">Landau, Anfang Oktober 1772</date>
 				<location ref="5" />
 				<person ref="1" />
 			</sent>
@@ -326,7 +327,7 @@
 
 		<letterDesc letter="22">
 			<sent>
-				<date notBefore="1772-10-01" notAfter="1772-10-15" when="1772-10-10">Landau, vor Mitte Oktober 1772</date><!-- Was ist für "vor Mitte Oktober" die konventionelle Zeitspanne? -->
+				<date notAfter="1772-10-15">Landau, vor Mitte Oktober 1772</date>
 				<location ref="5" />
 				<person ref="1" />
 			</sent>
@@ -341,7 +342,7 @@
 
 		<letterDesc letter="23">
 			<sent>
-				<date notBefore="1772-10-10" notAfter="1772-10-20" when="1772-10-15">Landau, Mitte Oktober 1772</date>
+				<date notBefore="1772-10-10" notAfter="1772-10-20">Landau, Mitte Oktober 1772</date>
 				<location ref="5" />
 				<person ref="1" />
 			</sent>
@@ -356,7 +357,7 @@
 
 		<letterDesc letter="24">
 			<sent>
-				<date notBefore="1772-10-15" notAfter="1772-10-31" when="1772-10-20">Landau, Zweite Oktoberhälfte Oktober 1772</date>
+				<date notBefore="1772-10-15" notAfter="1772-10-31">Landau, Zweite Oktoberhälfte Oktober 1772</date>
 				<location ref="5" />
 				<person ref="1" />
 			</sent>
@@ -371,7 +372,7 @@
 
 		<letterDesc letter="25">
 			<sent>
-				<date notBefore="1772-10-20" notAfter="1772-08-31" when="1772-10-25">Landau, Gegen Ende Oktober 1772</date><!-- Was ist die für "Gegen Ende Oktober" konventionelle Zeitspanne? -->
+				<date notBefore="1772-10-20" notAfter="1772-08-31">Landau, Gegen Ende Oktober 1772</date><!-- Was ist die für "Gegen Ende Oktober" konventionelle Zeitspanne? -->
 				<location ref="5" />
 				<person ref="1" />
 			</sent>
@@ -386,7 +387,7 @@
 
 		<letterDesc letter="26">
 			<sent>
-				<date notBefore="1772-10-15" notAfter="1772-10-31" when="1772-10-31">Landau, Ende Oktober 1772</date>
+				<date notBefore="1772-10-15" notAfter="1772-10-31">Landau, Ende Oktober 1772</date>
 				<location ref="5" />
 				<person ref="1" />
 			</sent>
@@ -399,7 +400,7 @@
 			<isDraft value="false" />
 		</letterDesc>
 
-		<letterDesc letter="27">			<!-- Handelt es sich hier um einen Entwurf? -->
+		<letterDesc letter="27">			
 			<sent>
 				<date when="1772-12-10">Landau, 10. Dezember 1772</date>
 				<location ref="5" />
@@ -416,7 +417,7 @@
 
 		<letterDesc letter="28">
 			<sent>
-				<date notBefore="1774-03-10" notAfter="1774-03-20" when="1774-03-15">Straßburg, Mitte März 1774</date>
+				<date notBefore="1774-03-10" notAfter="1774-03-20">Straßburg, Mitte März 1774</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -431,7 +432,7 @@
 
 		<letterDesc letter="29">
 			<sent>
-				<date notBefore="1774-03-15" notAfter="1774-03-31" when="1774-03-31">Straßburg, Ende März 1774</date><!-- Was sind die konventionalisierten Zeitspannen für "Anfang", "Mitte" und "Ende"? -->
+				<date notBefore="1774-03-15" notAfter="1774-03-31">Straßburg, Ende März 1774</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -477,7 +478,7 @@
 
 		<letterDesc letter="32">
 			<sent>
-				<date notBefore="1774-05-15" notAfter="1774-05-31" when="1774-05-31">Zürich, Ende Mai 1774</date>
+				<date notBefore="1774-05-15" notAfter="1774-05-31">Zürich, Ende Mai 1774</date>
 				<location ref="11" />
 				<person ref="10" />
 			</sent>
@@ -493,7 +494,7 @@
 
 		<letterDesc letter="33">
 			<sent>
-				<date notBefore="1774-06-01" notAfter="1774-06-15" when="1774-06-01">Straßburg, Anfang Juni 1774</date>
+				<date notBefore="1774-06-01" notAfter="1774-06-15">Straßburg, Anfang Juni 1774</date>
 				<location ref="7" />
 				<person ref="1" />
 				<person ref="11" />
@@ -557,12 +558,12 @@
 
 		<letterDesc letter="37">
 			<sent>
-				<date notBefore="1774-07-10" notAfter="1774-07-20" when="1774-07-15">Straßburg, Mitte Juli 1774</date>
+				<date notBefore="1774-07-10" notAfter="1774-07-20">Straßburg, Mitte Juli 1774</date>
 				<location ref="7" />
 				<person ref="10" />
 			</sent>
 			<received>
-				<location ref="56" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="56" cert="low">vmtl.</location>
 				<person ref="12" />
 			</received>
 			<hasOriginal value="false" />
@@ -607,7 +608,7 @@
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="57" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="57" cert="low">vmtl.</location>
 				<person ref="8" />
 			</received>
 			<hasOriginal value="true" />
@@ -617,12 +618,12 @@
 
 		<letterDesc letter="41">
 			<sent>
-				<date notBefore="1775-02-01" notAfter="1775-02-28" when="1775-02-01">Straßburg, Februar 1775</date>
+				<date notBefore="1775-02-01" notAfter="1775-02-28">Straßburg, Februar 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="56" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="56" cert="low">vmtl.</location>
 				<person ref="12" />
 			</received>
 			<hasOriginal value="true" />
@@ -677,7 +678,7 @@
 
 		<letterDesc letter="45">
 			<sent>
-				<date notBefore="1775-04-15" notAfter="1775-04-30" when="1775-04-30">Straßburg, Ende April 1775</date>
+				<date notBefore="1775-04-15" notAfter="1775-04-30">Straßburg, Ende April 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -707,7 +708,7 @@
 
 		<letterDesc letter="47">
 			<sent>
-				<date notBefore="1775-05-01" notAfter="1775-05-15" when="1775-05-03">Emmeningen, Anfang Mai 1775</date>
+				<date notBefore="1775-05-01" notAfter="1775-05-15">Emmeningen, Anfang Mai 1775</date>
 				<location ref="12" />
 				<person ref="18" />
 			</sent>
@@ -722,7 +723,7 @@
 
 		<letterDesc letter="48">
 			<sent>
-				<date notBefore="1775-05-01" notAfter="1775-05-15" when="1775-05-05">Straßburg, Anfang Mai 1775</date>
+				<date notBefore="1775-05-01" notAfter="1775-05-15">Straßburg, Anfang Mai 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -767,7 +768,7 @@
 
 		<letterDesc letter="51">
 			<sent>
-				<date notBefore="1775-06-01" notAfter="1775-06-30" when="1775-06-01">Straßburg, Wahrscheinlich Juni 1775</date>
+				<date notBefore="1775-06-01" notAfter="1775-06-30">Straßburg, Wahrscheinlich Juni 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -783,8 +784,8 @@
 
 		<letterDesc letter="52">
 			<sent>
-				<date notBefore="1775-06-01" notAfter="1775-06-15" when="1775-06-07">vermutlich Emmendingen, wahrscheinlich Anfang Juni 1775</date>
-				<location ref="12" cert="low" />
+				<date notBefore="1775-06-01" notAfter="1775-06-15">vermutlich Emmendingen, wahrscheinlich Anfang Juni 1775</date>
+				<location ref="12" cert="low">vmtl.</location>
 				<person ref="1" />
 			</sent>
 			<received>
@@ -798,7 +799,7 @@
 
 		<letterDesc letter="53">
 			<sent>
-				<date notBefore="1775-06-01" notAfter="1775-06-30" when="1775-06-15">Straßburg, Juni 1775</date>
+				<date notBefore="1775-06-01" notAfter="1775-06-30">Straßburg, Juni 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -811,14 +812,14 @@
 			<isDraft value="false" />
 		</letterDesc>
 
-		<letterDesc letter="54">			<!-- Französischer Brief -->
+		<letterDesc letter="54">			
 			<sent>
-				<date notBefore="1775-06-01" notAfter="1775-06-30" when="1775-06-20">Straßburg, Wahrscheinlich Juni 1775</date>
+				<date notBefore="1775-06-01" notAfter="1775-06-30">Straßburg, Wahrscheinlich Juni 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="56" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="56" cert="low">vmtl.</location>
 				<person ref="12" />
 			</received>
 			<hasOriginal value="true" />
@@ -844,13 +845,13 @@
 
 		<letterDesc letter="56">
 			<sent>
-				<date notBefore="1775-07-01" notAfter="1775-07-31" when="1775-07-15">Wahrscheinlich Straßburg, Juli 1775</date>
-				<location ref="7" cert="low" />
+				<date notBefore="1775-07-01" notAfter="1775-07-31">Wahrscheinlich Straßburg, Juli 1775</date>
+				<location ref="7" cert="low">vmtl.</location>
 				<person ref="1" />
 				<person ref="10" />
 			</sent>
 			<received>
-				<location ref="11" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="11" cert="low">vmtl.</location>
 				<person ref="19" />
 			</received>
 			<hasOriginal value="true" />
@@ -860,7 +861,7 @@
 
 		<letterDesc letter="57">
 			<sent>
-				<date notBefore="1775-07-01" notAfter="1775-07-31" when="1775-07-17">Straßburg, Juli 1775</date>
+				<date notBefore="1775-07-01" notAfter="1775-07-31">Straßburg, Juli 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -905,7 +906,7 @@
 
 		<letterDesc letter="60">
 			<sent>
-				<date notBefore="1775-07-01" notAfter="1775-07-31" when="1775-07-25">Straßburg, Juli 1775</date>
+				<date notBefore="1775-07-01" notAfter="1775-07-31">Straßburg, Juli 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -920,7 +921,7 @@
 
 		<letterDesc letter="61">
 			<sent>
-				<date notBefore="1775-07-01" notAfter="1775-07-31" when="1775-07-28">Straßburg, Juli 1775</date>
+				<date notBefore="1775-07-01" notAfter="1775-07-31">Straßburg, Juli 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -995,7 +996,7 @@
 
 		<letterDesc letter="66">
 			<sent>
-				<date notBefore="1775-09-15" notAfter="1775-09-30" when="1775-09-10">Straßburg, Mitte September 1775</date>
+				<date notBefore="1775-09-15" notAfter="1775-09-30">Straßburg, Mitte September 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1010,7 +1011,7 @@
 
 		<letterDesc letter="67">
 			<sent>
-				<date notBefore="1775-09-01" notAfter="1775-09-30" when="1775-09-14">Tartu, September 1775</date>
+				<date notBefore="1775-09-01" notAfter="1775-09-30">Tartu, September 1775</date>
 				<location ref="1" />
 				<person ref="5" />
 			</sent>
@@ -1025,7 +1026,7 @@
 
 		<letterDesc letter="68">
 			<sent>
-				<date notBefore="1775-09-01" notAfter="1775-09-30" when="1775-09-15">Straßburg, September 1775</date>
+				<date notBefore="1775-09-01" notAfter="1775-09-30">Straßburg, September 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1085,7 +1086,7 @@
 
 		<letterDesc letter="72">
 			<sent>
-				<date notBefore="1775-09-15" notAfter="1775-09-30" when="1775-09-30">Straßburg, Ende September 1775</date>
+				<date notBefore="1775-09-15" notAfter="1775-09-30">Straßburg, Ende September 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1100,7 +1101,7 @@
 
 		<letterDesc letter="73">
 			<sent>
-				<date notBefore="1775-10-01" notAfter="1775-10-31" when="1775-10-01">Straßburg, Wahrscheinlich Oktober 1775</date>
+				<date notBefore="1775-10-01" notAfter="1775-10-31">Straßburg, Wahrscheinlich Oktober 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1130,7 +1131,7 @@
 
 		<letterDesc letter="75">
 			<sent>
-				<date notBefore="1775-10-01" notAfter="1775-10-31" when="1775-10-05">Zürich, Oktober 1775</date>
+				<date notBefore="1775-10-01" notAfter="1775-10-31">Zürich, Oktober 1775</date>
 				<location ref="11" />
 				<person ref="10" />
 			</sent>
@@ -1160,7 +1161,7 @@
 
 		<letterDesc letter="77">
 			<sent>
-				<date notBefore="1775-10-01" notAfter="1775-10-31" when="1775-10-15">Straßburg, Oktober 1775</date>
+				<date notBefore="1775-10-01" notAfter="1775-10-31">Straßburg, Oktober 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1265,7 +1266,7 @@
 
 		<letterDesc letter="84">
 			<sent>
-				<date notBefore="1775-11-01" notAfter="1775-11-30" when="1775-11-25">Straßburg, November 1775</date>
+				<date notBefore="1775-11-01" notAfter="1775-11-30">Straßburg, November 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1280,7 +1281,7 @@
 
 		<letterDesc letter="85">
 			<sent>
-				<date notBefore="1775-11-15" notAfter="1775-11-30" when="1775-11-30">Straßburg, Ende November 1775</date>
+				<date notBefore="1775-11-15" notAfter="1775-11-30">Straßburg, Ende November 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1295,7 +1296,7 @@
 
 		<letterDesc letter="86">
 			<sent>
-				<date notBefore="1775-12-01" notAfter="1775-12-31" when="1775-12-01">Straßburg, Dezember 1775</date>
+				<date notBefore="1775-12-01" notAfter="1775-12-31">Straßburg, Dezember 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1310,7 +1311,7 @@
 
 		<letterDesc letter="87">
 			<sent>
-				<date notBefore="1775-12-01" notAfter="1775-12-31" when="1775-12-05">Straßburg, Dezember 1775</date>
+				<date notBefore="1775-12-01" notAfter="1775-12-31">Straßburg, Dezember 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1325,7 +1326,7 @@
 
 		<letterDesc letter="88">
 			<sent>
-				<date notBefore="1775-12-01" notAfter="1775-12-31" when="1775-12-15">Straßburg, Dezember 1775</date>
+				<date notBefore="1775-12-01" notAfter="1775-12-31">Straßburg, Dezember 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1340,7 +1341,7 @@
 
 		<letterDesc letter="89">
 			<sent>
-				<date notBefore="1775-12-01" notAfter="1775-12-31" when="1775-12-20">Straßburg, Dezember 1775</date>
+				<date notBefore="1775-12-01" notAfter="1775-12-31">Straßburg, Dezember 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1355,7 +1356,7 @@
 
 		<letterDesc letter="90">
 			<sent>
-				<date notBefore="1775-12-01" notAfter="1775-12-31" when="1775-12-21">Straßburg, Dezember 1775</date>
+				<date notBefore="1775-12-01" notAfter="1775-12-31">Straßburg, Dezember 1775</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1377,7 +1378,8 @@
 				<person ref="18" />
 			</sent>
 			<received>
-				<location ref="56" cert="low" /><!-- Oder Karlsruhe -->
+				<location ref="56" cert="low">oder</location>
+				<location ref="63" cert="low" />
 				<person ref="19" />
 			</received>
 			<hasOriginal value="true" />
@@ -1432,7 +1434,7 @@
 
 		<letterDesc letter="95">
 			<sent>
-				<date notBefore="1776-01-01" notAfter="1776-01-31" when="1776-01-09">Zürich, Januar 1776</date>
+				<date notBefore="1776-01-01" notAfter="1776-01-31">Zürich, Januar 1776</date>
 				<location ref="11" />
 				<person ref="22" />
 			</sent>
@@ -1507,7 +1509,7 @@
 
 		<letterDesc letter="100">
 			<sent>
-				<date notBefore="1776-01-01" notAfter="1776-01-31" when="1776-01-15">Kehl, Januar 1776</date>
+				<date notBefore="1776-01-01" notAfter="1776-01-31">Kehl, Januar 1776</date>
 				<location ref="9" />
 				<person ref="1" />
 			</sent>
@@ -1518,12 +1520,11 @@
 			<hasOriginal value="true" />
 			<isProofread value="true" />
 			<isDraft value="false" />
-			<!-- Teile des Briefs sind auf französisch geschrieben. -->
 		</letterDesc>
 
 		<letterDesc letter="101">
 			<sent>
-				<date notBefore="1776-01-01" notAfter="1776-01-31" when="1776-01-16">Straßburg, Wahrscheinlich Januar 1776</date>
+				<date notBefore="1776-01-01" notAfter="1776-01-31">Straßburg, Wahrscheinlich Januar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1538,7 +1539,7 @@
 
 		<letterDesc letter="102">
 			<sent>
-				<date notBefore="1776-01-01" notAfter="1776-01-31" when="1776-01-17">Straßburg, Januar 1776</date>
+				<date notBefore="1776-01-01" notAfter="1776-01-31">Straßburg, Januar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1553,7 +1554,7 @@
 
 		<letterDesc letter="103">
 			<sent>
-				<date from="1776-01-21" to="1776-01-22" when="1776-01-21">Straßburg, 21./22.
+				<date from="1776-01-21" to="1776-01-22">Straßburg, 21./22.
 					Januar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
@@ -1584,12 +1585,12 @@
 
 		<letterDesc letter="105">
 			<sent>
-				<date notBefore="1776-01-01" notAfter="1776-01-31" when="1776-01-30">Straßburg, Januar 1776</date>
+				<date notBefore="1776-01-01" notAfter="1776-01-31">Straßburg, Januar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="8" cert="low" /><!-- vielleicht -->
+				<location ref="8" cert="low">vmtl.</location>
 				<person ref="26" />
 			</received>
 			<hasOriginal value="true" />
@@ -1599,7 +1600,7 @@
 
 		<letterDesc letter="106">
 			<sent>
-				<date notBefore="1776-01-15" notAfter="1776-01-31" when="1776-01-31">Straßburg, Ende Januar 1776</date>
+				<date notBefore="1776-01-15" notAfter="1776-01-31">Straßburg, Ende Januar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1644,7 +1645,7 @@
 
 		<letterDesc letter="109">
 			<sent>
-				<date when="1776-02-08">Straßburg, Vor 15. Februar 1776</date>
+				<date notAfter="1776-02-15">Straßburg, Vor 15. Februar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1660,8 +1661,7 @@
 		<letterDesc letter="110">
 			<sent>
 				<date when="1776-02-09">Auf dem Weg von Hannover nach Kassel?, 9. Februar 1776</date>
-				<location ref="34" cert="low" />
-				<!-- Der Ort kann nicht genau bestimmt werden -->				<!-- Für die Strecke extra Ort -->
+				<location ref="34" cert="low">vmtl.</location>
 				<person ref="19" />
 			</sent>
 			<received>
@@ -1675,9 +1675,8 @@
 
 		<letterDesc letter="111">
 			<sent>
-				<date notBefore="1776-02-01" notAfter="1776-02-28" when="1776-02-12">Auf dem Weg von Hannover nach Kassel?, Februar 1776</date>
-				<location ref="34" cert="low" />
-				<!-- Der Ort kann nicht genau bestimmt werden -->
+				<date notBefore="1776-02-01" notAfter="1776-02-28">Auf dem Weg von Hannover nach Kassel?, Februar 1776</date>
+				<location ref="34" cert="low">vmtl.</location>
 				<person ref="19" />
 			</sent>
 			<received>
@@ -1736,7 +1735,7 @@
 
 		<letterDesc letter="115">
 			<sent>
-				<date notBefore="1776-02-15" notAfter="1776-02-28" when="1776-02-25">Straßburg, Ende Februar 1776</date>
+				<date notBefore="1776-02-15" notAfter="1776-02-28">Straßburg, Ende Februar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1751,7 +1750,7 @@
 
 		<letterDesc letter="116">
 			<sent>
-				<date notBefore="1776-02-15" notAfter="1776-02-28" when="1776-02-26">Straßburg, Ende Februar 1776 (empfangen 6. März) </date>
+				<date notBefore="1776-02-15" notAfter="1776-02-28">Straßburg, Ende Februar 1776 (empfangen 6. März) </date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1766,7 +1765,7 @@
 
 		<letterDesc letter="117">
 			<sent>
-				<date notBefore="1776-02-15" notAfter="1776-02-28" when="1776-02-27">Straßburg, Ende Februar 1776 (empfangen 6. März)</date>
+				<date notBefore="1776-02-15" notAfter="1776-02-28">Straßburg, Ende Februar 1776 (empfangen 6. März)</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1796,7 +1795,7 @@
 
 		<letterDesc letter="119">
 			<sent>
-				<date notBefore="1776-02-15" notAfter="1776-02-28" when="1776-02-28">Straßburg, Ende Februar 1776</date>
+				<date notBefore="1776-02-15" notAfter="1776-02-28">Straßburg, Ende Februar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1811,7 +1810,7 @@
 
 		<letterDesc letter="120">
 			<sent>
-				<date notBefore="1776-02-15" notAfter="1776-02-28" when="1776-02-28">Straßburg, Ende Februar 1776</date>
+				<date notBefore="1776-02-15" notAfter="1776-02-28">Straßburg, Ende Februar 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1826,7 +1825,7 @@
 
 		<letterDesc letter="121">
 			<sent>
-				<date notBefore="1776-03-01" notAfter="1776-03-15" when="1776-03-01">Straßburg, Anfang März 1776</date>
+				<date notBefore="1776-03-01" notAfter="1776-03-15">Straßburg, Anfang März 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1871,7 +1870,7 @@
 
 		<letterDesc letter="124">
 			<sent>
-				<date  notAfter="1776-03-13" when="1776-03-07">Straßburg, Vor 14. März 1776 (empfangen am 14. März)</date>
+				<date  notAfter="1776-03-14">Straßburg, Vor 14. März 1776 (empfangen am 14. März)</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1931,7 +1930,7 @@
 
 		<letterDesc letter="128">
 			<sent>
-				<date notBefore="1776-03-01" notAfter="1776-03-15" when="1776-03-10">Straßburg, Anfang März 1776</date>
+				<date notBefore="1776-03-01" notAfter="1776-03-15">Straßburg, Anfang März 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1946,7 +1945,7 @@
 
 		<letterDesc letter="129">
 			<sent>
-				<date notBefore="1776-03-01" notAfter="1776-03-15" when="1776-03-10">Straßburg, Anfang März 1776</date>
+				<date notBefore="1776-03-01" notAfter="1776-03-15">Straßburg, Anfang März 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -1955,7 +1954,6 @@
 				<person ref="10" />
 			</received>
 			<hasOriginal value="false" />
-			<!-- Exzerptheft von Lavaters Hand; Abschrift? -->
 			<isProofread value="true" />
 			<isDraft value="false" />
 		</letterDesc>
@@ -1992,12 +1990,12 @@
 
 		<letterDesc letter="132">
 			<sent>
-				<date notBefore="1776-03-01" notAfter="1776-03-31" when="1776-03-13">Straßburg, März 1776</date>
+				<date notBefore="1776-03-01" notAfter="1776-03-31">Straßburg, März 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="59" cert="low" /><!-- vielleicht -->
+				<location ref="59" cert="low">vmtl.</location>
 				<person ref="19" />
 			</received>
 			<hasOriginal value="true" />
@@ -2067,7 +2065,7 @@
 
 		<letterDesc letter="137">
 			<sent>
-				<date notBefore="1776-03-01" notAfter="1776-03-31" when="1776-03-18">Bückeburg, März 1776</date>
+				<date notBefore="1776-03-01" notAfter="1776-03-31">Bückeburg, März 1776</date>
 				<location ref="21" />
 				<person ref="17" />
 			</sent>
@@ -2097,7 +2095,7 @@
 
 		<letterDesc letter="139">
 			<sent>
-				<date notBefore="1776-03-01" notAfter="1776-03-31" when="1776-03-20">Straßburg, März 1776</date>
+				<date notBefore="1776-03-01" notAfter="1776-03-31">Straßburg, März 1776</date>
 				<location ref="7" />
 				<person ref="1" />
 			</sent>
@@ -2142,7 +2140,7 @@
 
 		<letterDesc letter="142">
 			<sent>
-				<date notBefore="1776-03-15" notAfter="1776-03-31" when="1776-03-24">Frankfurt am Main, Ende März 1776</date>
+				<date notBefore="1776-03-15" notAfter="1776-03-31">Frankfurt am Main, Ende März 1776</date>
 				<location ref="56" />
 				<person ref="1" />
 			</sent>
@@ -2173,7 +2171,7 @@
 
 		<letterDesc letter="144">
 			<sent>
-				<date notBefore="1776-03-15" notAfter="1776-03-31" when="1776-03-26">Darmstadt, Ende März 1776</date>
+				<date notBefore="1776-03-15" notAfter="1776-03-31">Darmstadt, Ende März 1776</date>
 				<location ref="20" />
 				<person ref="1" />
 			</sent>
@@ -2203,7 +2201,7 @@
 
 		<letterDesc letter="146">
 			<sent>
-				<date notBefore="1776-03-15" notAfter="1776-03-31" when="1776-03-28">Darmstadt, Ende März 1776</date>
+				<date notBefore="1776-03-15" notAfter="1776-03-31">Darmstadt, Ende März 1776</date>
 				<location ref="20" />
 				<person ref="1" />
 			</sent>
@@ -2218,7 +2216,7 @@
 
 		<letterDesc letter="147">
 			<sent>
-				<date notBefore="1776-03-15" notAfter="1776-03-31" when="1776-03-29">Darmstadt, Ende März 1776</date>
+				<date notBefore="1776-03-15" notAfter="1776-03-31">Darmstadt, Ende März 1776</date>
 				<location ref="20" />
 				<person ref="1" />
 			</sent>
@@ -2277,7 +2275,7 @@
 
 		<letterDesc letter="151">
 			<sent>
-				<date notBefore="1776-03-28" notAfter="1776-04-05" when="1776-04-03">hinter Frankfurt, Um 1. April 1776</date> <!-- Was ist hier die konventionalisierte Zeitspannne? -->
+				<date notBefore="1776-03-28" notAfter="1776-04-05">hinter Frankfurt, Um 1. April 1776</date> <!-- Was ist hier die konventionalisierte Zeitspannne? -->
 				<person ref="1" />
 			</sent>
 			<received>
@@ -2321,7 +2319,7 @@
 
 		<letterDesc letter="154">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-06">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2330,19 +2328,18 @@
 				<person ref="10" />
 			</received>
 			<hasOriginal value="false" />
-			<!-- Hier handelt es sich um das Exzerptheft von Lavaters Hand -->
 			<isProofread value="true" />
 			<isDraft value="false" />
 		</letterDesc>
 
 		<letterDesc letter="155">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-08">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="59" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="59" cert="low">vmtl.</location>
 				<person ref="19" />
 			</received>
 			<hasOriginal value="true" />
@@ -2367,7 +2364,7 @@
 
 		<letterDesc letter="157">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-12">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2397,7 +2394,7 @@
 
 		<letterDesc letter="159">
 			<sent>
-				<date notBefore="1776-04-10" notAfter="1776-04-20" when="1776-04-15">Weimar, Mitte April 1776</date>
+				<date notBefore="1776-04-10" notAfter="1776-04-20">Weimar, Mitte April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2443,7 +2440,7 @@
 
 		<letterDesc letter="162">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-17">Mannheim, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Mannheim, April 1776</date>
 				<location ref="31" />
 				<person ref="35" />
 			</sent>
@@ -2458,7 +2455,7 @@
 
 		<letterDesc letter="163">
 			<sent>
-				<date  notAfter="1776-04-25" when="1776-04-18">Weimar, Vor 26. April 1776</date>
+				<date  notAfter="1776-04-26">Weimar, Vor 26. April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2473,7 +2470,7 @@
 
 		<letterDesc letter="164">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-19">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2488,7 +2485,7 @@
 
 		<letterDesc letter="165">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-20">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2503,7 +2500,7 @@
 
 		<letterDesc letter="166">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-21">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2518,7 +2515,7 @@
 
 		<letterDesc letter="167">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-04-30" when="1776-04-22">Weimar, April 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-04-30">Weimar, April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2533,7 +2530,7 @@
 
 		<letterDesc letter="168">
 			<sent>
-				<date notBefore="1776-04-15" notAfter="1776-04-30" when="1776-04-24">Weimar, Ende April 1776</date>
+				<date notBefore="1776-04-15" notAfter="1776-04-30">Weimar, Ende April 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2563,7 +2560,7 @@
 
 		<letterDesc letter="170">
 			<sent>
-				<date notBefore="1776-04-15" notAfter="1776-04-30" when="1776-04-26">Bückeburg, Ende April 1776</date>
+				<date notBefore="1776-04-15" notAfter="1776-04-30">Bückeburg, Ende April 1776</date>
 				<location ref="21" />
 				<person ref="16" />
 			</sent>
@@ -2655,7 +2652,7 @@
 
 		<letterDesc letter="176">
 			<sent>
-				<date notBefore="1776-04-04"  when="1776-05-09">Weimar, Nach 3. April 1776</date>
+				<date notBefore="1776-04-03">Weimar, Nach 3. April 1776</date>
 				<location ref="8" />
 				<person ref="37" />
 			</sent>
@@ -2670,7 +2667,7 @@
 
 		<letterDesc letter="177">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-11-30" when="1776-05-10">Weimar, Zwischen April und November 1776</date>
+				<date notBefore="1776-04-01" notAfter="1776-11-30">Weimar, Zwischen April und November 1776</date>
 				<location ref="8" />
 				<person ref="38" />
 			</sent>
@@ -2700,7 +2697,7 @@
 
 		<letterDesc letter="179">
 			<sent>
-				<date notBefore="1776-05-01" notAfter="1776-05-31" when="1776-05-12">Zürich, Mai 1776</date>
+				<date notBefore="1776-05-01" notAfter="1776-05-31">Zürich, Mai 1776</date>
 				<location ref="8" />
 				<person ref="22" />
 			</sent>
@@ -2715,7 +2712,7 @@
 
 		<letterDesc letter="180">
 			<sent>
-				<date notAfter="1776-05-15" when="1776-05-15">Weimar, Spätestens Mitte Mai 1776</date><!-- Also über @notAfter? -->
+				<date notAfter="1776-05-15">Weimar, Spätestens Mitte Mai 1776</date><!-- Also über @notAfter? -->
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2730,7 +2727,7 @@
 
 		<letterDesc letter="181">
 			<sent>
-				<date notBefore="1776-05-10" notAfter="1776-05-20" when="1776-05-17">Weimar, Mitte Mai 1776</date>
+				<date notBefore="1776-05-10" notAfter="1776-05-20">Weimar, Mitte Mai 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2805,7 +2802,7 @@
 
 		<letterDesc letter="186">
 			<sent>
-				<date notAfter="1776-05-26" when="1776-05-26">Weimar, Vor 27. Mai 1776</date>
+				<date notAfter="1776-05-27">Weimar, Vor 27. Mai 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2835,7 +2832,7 @@
 
 		<letterDesc letter="188">
 			<sent>
-				<date notBefore="1776-05-26" when="1776-05-27">Weimar, Kurz nach dem 24. Mai 1776</date> <!-- Ab wie vielen Tagen gilt "kurz nach"? -->
+				<date notBefore="1776-05-24">Weimar, Kurz nach dem 24. Mai 1776</date> 
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2850,7 +2847,7 @@
 
 		<letterDesc letter="189">
 			<sent>
-				<date notBefore="1776-05-15" notAfter="1776-05-31" when="1776-05-30">Weimar, Ende Mai 1776</date>
+				<date notBefore="1776-05-15" notAfter="1776-05-31">Weimar, Ende Mai 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2865,7 +2862,7 @@
 
 		<letterDesc letter="190">
 			<sent>
-				<date notBefore="1776-05-15" notAfter="1776-05-31" when="1776-05-31">Weimar, Ende Mai 1776</date>
+				<date notBefore="1776-05-15" notAfter="1776-05-31">Weimar, Ende Mai 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2880,7 +2877,7 @@
 
 		<letterDesc letter="191">
 			<sent>
-				<date notBefore="1776-04-01" notAfter="1776-08-31" when="1776-06-01">Weimar, Mitte 1776</date><!-- Welche Monate umfasst die Mitte? -->
+				<date notBefore="1776-04-01" notAfter="1776-08-31">Weimar, Mitte 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -2955,16 +2952,14 @@
 
 		<letterDesc letter="196">
 			<sent>
-				<date notBefore="1776-05-18" when="1776-06-20">Weimar, Bald nach dem 17. Juni 1776</date><!-- Ab wie vielen Tagen gilt "bald nach"? -->
+				<date notBefore="1776-06-17">Weimar, Bald nach dem 17. Juni 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
 			<received>
 				<location ref="7" />
-				<person ref="42" />
+				<person ref="42" cert="low">oder</person>
 				<person ref="43" />
-				<!-- Wie wird der Fall ausgezeichnet, dass unbestimmt ist, welche der beiden Personen als
-				receiver in Frage kommt? -->
 			</received>
 			<hasOriginal value="true" />
 			<isProofread value="true" />
@@ -2973,12 +2968,12 @@
 
 		<letterDesc letter="197">
 			<sent>
-				<date notBefore="1776-06-01" notAfter="1776-08-31" when="1776-06-24">Weimar, Sommer 1776</date>
+				<date notBefore="1776-06-01" notAfter="1776-08-31">Weimar, Sommer 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="31" cert="low" /><!-- wahrscheinlich -->
+				<location ref="31" cert="low">vmtl.</location>
 				<person ref="44" />
 			</received>
 			<hasOriginal value="true" />
@@ -3004,7 +2999,7 @@
 
 		<letterDesc letter="199">
 			<sent>
-				<date notBefore="1776-06-23" notAfter="1776-07-01" when="1776-06-27">Weimar, Um den 27. Juni 1776</date>
+				<date notBefore="1776-06-23" notAfter="1776-07-01">Weimar, Um den 27. Juni 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -3035,7 +3030,7 @@
 
 		<letterDesc letter="201">
 			<sent>
-				<date notBefore="1776-06-15" notAfter="1776-06-30" when="1776-06-28">Straßburg, Ende Juni 1776</date>
+				<date notBefore="1776-06-15" notAfter="1776-06-30">Straßburg, Ende Juni 1776</date>
 				<location ref="7" />
 				<person ref="11" />
 			</sent>
@@ -3065,7 +3060,7 @@
 
 		<letterDesc letter="203">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-04">Berka, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Berka, Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3080,7 +3075,7 @@
 
 		<letterDesc letter="204">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-15" when="1776-07-05">Berka, Anfang Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-15">Berka, Anfang Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3095,7 +3090,7 @@
 
 		<letterDesc letter="205">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-15" when="1776-07-08">Berka, Anfang Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-15">Berka, Anfang Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3110,7 +3105,7 @@
 
 		<letterDesc letter="206">
 			<sent>
-				<date notBefore="1776-05-24" when="1776-07-09">Berka, Nach dem 23. Mai 1776</date>
+				<date notBefore="1776-05-23">Berka, Nach dem 23. Mai 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3140,7 +3135,7 @@
 
 		<letterDesc letter="208">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-11">Weimar, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Weimar, Juli 1776</date>
 				<location ref="8" />
 				<person ref="12" />
 			</sent>
@@ -3155,7 +3150,7 @@
 
 		<letterDesc letter="209">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-12">Weimar, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Weimar, Juli 1776</date>
 				<location ref="8" />
 				<person ref="45" />
 			</sent>
@@ -3170,7 +3165,7 @@
 
 		<letterDesc letter="210">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-13">Berka, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Berka, Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3185,7 +3180,7 @@
 
 		<letterDesc letter="211">
 			<sent>
-				<date notBefore="1776-06-01" notAfter="1776-08-31" when="1776-07-14">Berka, Sommer 1776</date>
+				<date notBefore="1776-06-01" notAfter="1776-08-31">Berka, Sommer 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3215,7 +3210,7 @@
 
 		<letterDesc letter="213">
 			<sent>
-				<date notBefore="1776-06-01" notAfter="1776-08-31" when="1776-07-16">Berka, Sommer 1776</date>
+				<date notBefore="1776-06-01" notAfter="1776-08-31">Berka, Sommer 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3230,7 +3225,7 @@
 
 		<letterDesc letter="214">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-17">Berka, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Berka, Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3245,7 +3240,7 @@
 
 		<letterDesc letter="215">
 			<sent>
-				<date notBefore="1776-06-01" notAfter="1776-08-31" when="1776-07-18">Weimar, Sommer 1776</date>
+				<date notBefore="1776-06-01" notAfter="1776-08-31">Weimar, Sommer 1776</date>
 				<location ref="8" />
 				<person ref="47" />
 			</sent>
@@ -3260,7 +3255,7 @@
 
 		<letterDesc letter="216">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-19">Weimar, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Weimar, Juli 1776</date>
 				<location ref="7" />
 				<person ref="11" />
 			</sent>
@@ -3275,7 +3270,7 @@
 
 		<letterDesc letter="217">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-20">Berka, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Berka, Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3290,7 +3285,7 @@
 
 		<letterDesc letter="218">
 			<sent>
-				<date notBefore="1776-07-10" notAfter="1776-07-20" when="1776-07-21">Berka, Mitte Juli 1776</date>
+				<date notBefore="1776-07-10" notAfter="1776-07-20">Berka, Mitte Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3305,7 +3300,7 @@
 
 		<letterDesc letter="219">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-22">Berka, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Berka, Juli 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3320,7 +3315,7 @@
 
 		<letterDesc letter="220">
 			<sent>
-				<date notBefore="1776-06-01" notAfter="1776-08-31" when="1776-07-23">wahrscheinlich Berka, Sommer 1776</date>
+				<date notBefore="1776-06-01" notAfter="1776-08-31">wahrscheinlich Berka, Sommer 1776</date>
 				<location ref="14" cert="low" />
 				<person ref="1" />
 			</sent>
@@ -3350,7 +3345,7 @@
 
 		<letterDesc letter="222">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-25">Straßburg, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Straßburg, Juli 1776</date>
 				<location ref="7" />
 				<person ref="11" />
 			</sent>
@@ -3380,7 +3375,7 @@
 
 		<letterDesc letter="224">
 			<sent>
-				<date notBefore="1776-07-01" notAfter="1776-07-31" when="1776-07-27">Berka, Juli 1776</date>
+				<date notBefore="1776-07-01" notAfter="1776-07-31">Berka, Juli 1776</date>
 				<location ref="14" />
 				<person ref="25" />
 			</sent>
@@ -3426,7 +3421,7 @@
 
 		<letterDesc letter="227">
 			<sent>
-				<date notAfter="1776-08-12" when="1776-08-05">Berka, Vor 13. August 1776</date>
+				<date notAfter="1776-08-13">Berka, Vor 13. August 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3501,7 +3496,7 @@
 
 		<letterDesc letter="232">
 			<sent>
-				<date notBefore="1776-09-01" notAfter="1776-09-15" when="1776-09-02">Berka, Anfang September 1776</date>
+				<date notBefore="1776-09-01" notAfter="1776-09-15">Berka, Anfang September 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3516,7 +3511,7 @@
 
 		<letterDesc letter="233">
 			<sent>
-				<date notBefore="1776-09-01" notAfter="1776-09-15" when="1776-09-15">Kochberg, Mitte September 1776</date>
+				<date notBefore="1776-09-01" notAfter="1776-09-15">Kochberg, Mitte September 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3533,7 +3528,7 @@
 			<sent>
 				<date when="1776-09-20">Weimar [tatsächlich wohl aus Kochberg], 20. September 1776</date>
 				<location ref="8" cert="low" />
-				<!-- Eigentlicher Ort? -->
+				<location ref="8" cert="low" />
 				<person ref="1" />
 			</sent>
 			<received>
@@ -3578,12 +3573,12 @@
 
 		<letterDesc letter="237">
 			<sent>
-				<date notBefore="1776-09-01" notAfter="1776-09-30" when="1776-09-23">Straßburg, September 1776</date>
+				<date notBefore="1776-09-01" notAfter="1776-09-30">Straßburg, September 1776</date>
 				<location ref="7" />
 				<person ref="45" />
 			</sent>
 			<received>
-				<location ref="30" cert="low" /><!-- Wahrscheinlich -->
+				<location ref="30" cert="low">vmtl.</location>
 				<person ref="1" />
 			</received>
 			<hasOriginal value="true" />
@@ -3593,7 +3588,7 @@
 
 		<letterDesc letter="238">
 			<sent>
-				<date notBefore="1776-09-01" notAfter="1776-09-30" when="1776-09-25">Kochberg, September 1776</date>
+				<date notBefore="1776-09-01" notAfter="1776-09-30">Kochberg, September 1776</date>
 				<location ref="30" />
 				<person ref="1" />
 			</sent>
@@ -3623,7 +3618,7 @@
 
 		<letterDesc letter="240">
 			<sent>
-				<date notBefore="1776-10-09" notAfter="1776-10-10" when="1776-10-09">Kochberg, 9. oder 10. Oktober 1776</date><!-- Wie wird entweder oder ausgezeichnet? Auch über @notBefore und @notAfter? -->
+				<date notBefore="1776-10-09" notAfter="1776-10-10">Kochberg, 9. oder 10. Oktober 1776</date>
 				<location ref="30" />
 				<person ref="1" />
 			</sent>
@@ -3638,7 +3633,7 @@
 
 		<letterDesc letter="241">
 			<sent>
-				<date notBefore="1776-10-01" notAfter="1776-10-31" when="1776-10-15">Weimar, Oktober 1776</date>
+				<date notBefore="1776-10-01" notAfter="1776-10-31">Weimar, Oktober 1776</date>
 				<location ref="8" />
 				<person ref="45" />
 			</sent>
@@ -3653,7 +3648,7 @@
 
 		<letterDesc letter="242">
 			<sent>
-				<date notBefore="1776-10-01" notAfter="1776-10-31" when="1776-10-20">Göttingen, Oktober 1776</date>
+				<date notBefore="1776-10-01" notAfter="1776-10-31">Göttingen, Oktober 1776</date>
 				<location ref="16" />
 				<person ref="11" />
 			</sent>
@@ -3698,7 +3693,7 @@
 
 		<letterDesc letter="245">
 			<sent>
-				<date notBefore="1776-10-01" notAfter="1776-10-31" when="1776-10-25">Weimar, Oktober 1776</date>
+				<date notBefore="1776-10-01" notAfter="1776-10-31">Weimar, Oktober 1776</date>
 				<location ref="8" />
 				<person ref="26" />
 			</sent>
@@ -3715,7 +3710,7 @@
 			<sent>
 				<date notBefore="1776-10-01" notAfter="1776-10-31" when="1776-10-26">Wohl Berka oder Kochberg, Oktober 1776</date>
 				<location ref="14" cert="low" />
-				<!-- Oder Kochberg -->				<!-- Extra location für den Fall -->
+				<location ref="30" cert="low" />				
 				<person ref="1" />
 			</sent>
 			<received>
@@ -3729,9 +3724,9 @@
 
 		<letterDesc letter="247">
 			<sent>
-				<date notBefore="1776-10-01" notAfter="1776-11-30" when="1776-10-27">Wohl Berka oder Kochberg, Oktober/November 1776</date>
+				<date notBefore="1776-10-01" notAfter="1776-11-30">Wohl Berka oder Kochberg, Oktober/November 1776</date>
 				<location ref="14" cert="low" />
-				<!-- Oder Kochberg -->
+				<location ref="30" cert="low" />
 				<person ref="1" />
 			</sent>
 			<received>
@@ -3745,7 +3740,7 @@
 
 		<letterDesc letter="248">
 			<sent>
-				<date notBefore="1776-11-01" notAfter="1776-11-15" when="1776-11-01">Göttingen, Anfang November 1776</date>
+				<date notBefore="1776-11-01" notAfter="1776-11-15">Göttingen, Anfang November 1776</date>
 				<location ref="16" />
 				<person ref="11" />
 			</sent>
@@ -3760,7 +3755,7 @@
 
 		<letterDesc letter="249">
 			<sent>
-				<date notBefore="1776-11-01" notAfter="1776-11-15" when="1776-11-02">Berka, Anfang November 1776</date>
+				<date notBefore="1776-11-01" notAfter="1776-11-15">Berka, Anfang November 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3851,15 +3846,14 @@
 		<letterDesc letter="255">
 			<sent>
 				<date when="1776-11-23">Weimar [wohl Berka], 23. November 1776</date>
-				<!-- Weimar [wohl Berka] -->
 				<location ref="8" cert="low" />
+				<location ref="14" cert="low" />
 				<person ref="1" />
 			</sent>
 			<received>
 				<location ref="7" />
-				<person ref="42" />
-				<!-- Unklar welche Laudth den Brief empfangen hat -->
-				<person ref="43" />
+				<person ref="42" cert="low"/>
+				<person ref="43" cert="low"/>
 			</received>
 			<hasOriginal value="true" />
 			<isProofread value="true" />
@@ -3884,7 +3878,7 @@
 
 		<letterDesc letter="257">
 			<sent>
-				<date notBefore="1776-11-22" notAfter="1776-11-25" when="1776-11-24">Weimar, Zwischen 22. und 25. November 1776</date>
+				<date notBefore="1776-11-22" notAfter="1776-11-25">Weimar, Zwischen 22. und 25. November 1776</date>
 				<location ref="8" />
 				<person ref="25" />
 			</sent>
@@ -3899,7 +3893,7 @@
 
 		<letterDesc letter="258">
 			<sent>
-				<date notBefore="1776-11-15" notAfter="1776-11-30" when="1776-11-25">Berka, Ende November 1776</date>
+				<date notBefore="1776-11-15" notAfter="1776-11-30">Berka, Ende November 1776</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -3929,7 +3923,7 @@
 
 		<letterDesc letter="260">
 			<sent>
-				<date notBefore="1776-11-29" notAfter="1776-11-30" when="1776-11-29">Weimar, 29. oder 30. November 1776</date>
+				<date notBefore="1776-11-29" notAfter="1776-11-30">Weimar, 29. oder 30. November 1776</date>
 				<location ref="8" />
 				<person ref="1" />
 			</sent>
@@ -4004,8 +3998,8 @@
 
 		<letterDesc letter="265">
 			<sent>
-				<date notBefore="1776-12-01" notAfter="1776-12-15" when="1776-12-01">wohl auf der Reise nach Emmendingen, Anfang Dezember 1776</date>
-				<location ref="33" cert="low" />
+				<date notBefore="1776-12-01" notAfter="1776-12-15">wohl auf der Reise nach Emmendingen, Anfang Dezember 1776</date>
+				<location ref="33" cert="low" >vmtl.</location>
 				<person ref="1" />
 			</sent>
 			<received>
@@ -4079,7 +4073,7 @@
 
 		<letterDesc letter="270">
 			<sent>
-				<date notBefore="1777-01-24" when="1777-01-30">Emmendingen, Wohl bald nach 24. Januar 1777</date>
+				<date notBefore="1777-01-24">Emmendingen, Wohl bald nach 24. Januar 1777</date>
 				<location ref="12" />
 				<person ref="1" />
 			</sent>
@@ -4094,7 +4088,7 @@
 
 		<letterDesc letter="271">
 			<sent>
-				<date notBefore="1777-01-01" notAfter="1777-02-28" when="1777-01-31">Berka, Januar/Februar 1777</date>
+				<date notBefore="1777-01-01" notAfter="1777-02-28">Berka, Januar/Februar 1777</date>
 				<location ref="14" />
 				<person ref="1" />
 			</sent>
@@ -4109,7 +4103,7 @@
 
 		<letterDesc letter="272">
 			<sent>
-				<date notBefore="1777-02-20" notAfter="1777-02-23" when="1777-02-20">Zürich, 20.–23. Februar 1777</date>
+				<date notBefore="1777-02-20" notAfter="1777-02-23">Zürich, 20.–23. Februar 1777</date>
 				<location ref="11" />
 				<person ref="22" />
 			</sent>
@@ -4139,7 +4133,6 @@
 
 		<letterDesc letter="274">
 			<sent>
-				<!-- Kommentar in der Datierung -->
 				<date when="1777-04-09">Emmendingen, [vor 22. April 1777], warum nicht 9. April 1777</date>
 				<location ref="12" />
 				<person ref="1" />
@@ -4170,7 +4163,7 @@
 
 		<letterDesc letter="276">
 			<sent>
-				<date notBefore="1777-03-01" notAfter="1777-05-31" when="1777-04-15">Schweiz, Wohl Frühjahr 1777</date>
+				<date notBefore="1777-03-01" notAfter="1777-05-31">Schweiz, Wohl Frühjahr 1777</date>
 				<location ref="36" />
 				<person ref="1" />
 			</sent>
@@ -4215,7 +4208,7 @@
 
 		<letterDesc letter="279">
 			<sent>
-				<date notBefore="1777-05-12" notAfter="1777-05-15" when="1777-05-12">Schinznach/Zürich, 12.-15. Mai 1777</date>
+				<date notBefore="1777-05-12" notAfter="1777-05-15">Schinznach/Zürich, 12.-15. Mai 1777</date>
 				<location ref="11" />
 				<person ref="10" />
 			</sent>
@@ -4230,7 +4223,7 @@
 
 		<letterDesc letter="280">
 			<sent>
-				<date notBefore="1777-05-12" notAfter="1777-05-15" when="1777-05-13">Schinznach, 12.–15. Mai 1777</date>
+				<date notBefore="1777-05-12" notAfter="1777-05-15">Schinznach, 12.–15. Mai 1777</date>
 				<location ref="53" />
 				<person ref="57" />
 			</sent>
@@ -4337,7 +4330,7 @@
 
 		<letterDesc letter="287">
 			<sent>
-				<date notBefore="1777-06-14" notAfter="1777-06-24" when="1777-06-20">Zürich, Zwischen 14. und 24. Juni 1777</date>
+				<date notBefore="1777-06-14" notAfter="1777-06-24">Zürich, Zwischen 14. und 24. Juni 1777</date>
 				<location ref="11" />
 				<person ref="1" />
 			</sent>
@@ -4367,7 +4360,7 @@
 
 		<letterDesc letter="289">
 			<sent>
-				<date notBefore="1777-06-15" notAfter="1777-06-30" when="1777-06-30">Emmendingen, Ende Juni 1777</date>
+				<date notBefore="1777-06-15" notAfter="1777-06-30">Emmendingen, Ende Juni 1777</date>
 				<location ref="12" />
 				<person ref="1" />
 			</sent>
@@ -4428,12 +4421,12 @@
 
 		<letterDesc letter="293">
 			<sent>
-				<date notBefore="1777-07-19" notAfter="1777-07-22" when="1777-07-19">Basel, 19.–22. Juli 1777</date>
+				<date notBefore="1777-07-19" notAfter="1777-07-22">Basel, 19.–22. Juli 1777</date>
 				<location ref="35" />
 				<person ref="80" />
 			</sent>
 			<received>
-				<location ref="11" cert="low" /><!-- wahrscheinlich -->
+				<location ref="11" cert="low">vmtl.</location>
 				<person ref="1" />
 			</received>
 			<hasOriginal value="true" />
@@ -4473,7 +4466,7 @@
 
 		<letterDesc letter="296">
 			<sent>
-				<date notBefore="1777-08-01" notAfter="1777-08-31" when="1777-08-15">Schweiz, Spätsommer 1777</date>
+				<date notBefore="1777-08-01" notAfter="1777-08-31">Schweiz, Spätsommer 1777</date>
 				<location ref="36" />
 				<person ref="1" />
 			</sent>
@@ -4488,7 +4481,7 @@
 
 		<letterDesc letter="297">
 			<sent>
-				<date notBefore="1777-08-01" notAfter="1777-08-31" when="1777-08-25">Zürich, August 1777</date>
+				<date notBefore="1777-08-01" notAfter="1777-08-31">Zürich, August 1777</date>
 				<location ref="11" />
 				<person ref="1" />
 			</sent>
@@ -4539,7 +4532,7 @@
 				<person ref="1" />
 			</sent>
 			<received>
-				<location ref="35" /><!-- Empfangsort steht nicht in der Transkription -->
+				<location ref="35" />
 				<person ref="81" />
 			</received>
 			<hasOriginal value="true" />
@@ -4594,7 +4587,7 @@
 
 		<letterDesc letter="304">
 			<sent>
-				<date notBefore="1777-11-01" notAfter="1777-11-15" when="1777-11-05">Zürich, Anfang November 1777</date>
+				<date notBefore="1777-11-01" notAfter="1777-11-15">Zürich, Anfang November 1777</date>
 				<location ref="11" />
 				<person ref="1" />
 			</sent>
@@ -4669,7 +4662,7 @@
 
 		<letterDesc letter="309">
 			<sent>
-				<date notBefore="1777-12-15" notAfter="1777-12-31" when="1777-12-15">Schloss Hegi, Zweite Dezemberhälfte 1777</date>
+				<date notBefore="1777-12-15" notAfter="1777-12-31">Schloss Hegi, Zweite Dezemberhälfte 1777</date>
 				<location ref="54" />
 				<person ref="1" />
 			</sent>
@@ -4730,7 +4723,7 @@
 
 		<letterDesc letter="313">
 			<sent>
-				<date notAfter="1778-06-22" when="1778-06-20">Emmendingen, Kurz vor 24. Juni 1778</date>
+				<date notAfter="1778-06-24">Emmendingen, Kurz vor 24. Juni 1778</date>
 				<location ref="12" />
 				<person ref="1" />
 			</sent>
@@ -4745,7 +4738,7 @@
 
 		<letterDesc letter="314">
 			<sent>
-				<date notBefore="1778-07-01" notAfter="1778-07-31" when="1778-07-15">Emmendingen, Juli 1778</date>
+				<date notBefore="1778-07-01" notAfter="1778-07-31">Emmendingen, Juli 1778</date>
 				<location ref="12" />
 				<person ref="1" />
 			</sent>
@@ -4760,7 +4753,7 @@
 
 		<letterDesc letter="315">
 			<sent>
-				<date notBefore="1778-08-01" notAfter="1778-07-15" when="1778-08-01">Emmendingen, Anfang August 1778</date>
+				<date notBefore="1778-08-01" notAfter="1778-07-15">Emmendingen, Anfang August 1778</date>
 				<location ref="12" />
 				<person ref="1" />
 			</sent>
@@ -4775,7 +4768,7 @@
 
 		<letterDesc letter="316">
 			<sent>
-				<date notBefore="1778-08-01" notAfter="1778-08-12" when="1778-08-05">Emmendingen, Wohl zwischen 1. und 12. August 1778</date>
+				<date notBefore="1778-08-01" notAfter="1778-08-12">Emmendingen, Wohl zwischen 1. und 12. August 1778</date>
 				<location ref="12" />
 				<person ref="1" />
 			</sent>
@@ -4805,7 +4798,7 @@
 
 		<letterDesc letter="318">
 			<sent>
-				<date notBefore="1778-08-01" notAfter="1778-09-30" when="1778-09-01">Weisweil, August/September 1778</date>
+				<date notBefore="1778-08-01" notAfter="1778-09-30">Weisweil, August/September 1778</date>
 				<location ref="43" />
 				<person ref="1" />
 			</sent>
@@ -4835,8 +4828,8 @@
 
 		<letterDesc letter="320">
 			<sent>
-				<date notBefore="1779-06-01" notAfter="1779-08-31" when="1779-07-01">Wohl auf der Reise nach Livland, Sommer 1779</date>
-				<location ref="55" cert="low" />
+				<date notBefore="1779-06-01" notAfter="1779-08-31">Wohl auf der Reise nach Livland, Sommer 1779</date>
+				<location ref="55" cert="low">vmtl.</location>
 				<person ref="1" />
 			</sent>
 			<received>
@@ -4946,7 +4939,6 @@
 				<person ref="1" />
 			</sent>
 			<received>
-				<!-- Der Brief hat sie nicht erreicht? Also kein Empfangsort? Sollten die Entwürfe auch analog keinen Empfangsort bekommen? -->
 				<person ref="64" />
 			</received>
 			<hasOriginal value="true" />
@@ -4971,7 +4963,7 @@
 
 		<letterDesc letter="329">
 			<sent>
-				<date notBefore="1780-04-01" notAfter="1780-04-15" when="1780-04-02">St. Petersburg, wohl Anfang April 1780</date>
+				<date notBefore="1780-04-01" notAfter="1780-04-15">St. Petersburg, wohl Anfang April 1780</date>
 				<location ref="46" />
 				<person ref="1" />
 			</sent>
@@ -5046,7 +5038,7 @@
 
 		<letterDesc letter="334">
 			<sent>
-				<date notBefore="1780-04-10" notAfter="1780-04-20" when="1780-04-16">St. Petersburg, Mitte April 1780</date>
+				<date notBefore="1780-04-10" notAfter="1780-04-20">St. Petersburg, Mitte April 1780</date>
 				<location ref="46" />
 				<person ref="1" />
 			</sent>
@@ -5061,7 +5053,7 @@
 
 		<letterDesc letter="335">
 			<sent>
-				<date notBefore="1780-04-01" notAfter="1780-04-30" when="1780-04-25">St. Petersburg, April 1780</date>
+				<date notBefore="1780-04-01" notAfter="1780-04-30">St. Petersburg, April 1780</date>
 				<location ref="46" />
 				<person ref="1" />
 			</sent>
@@ -5077,7 +5069,7 @@
 
 		<letterDesc letter="336">
 			<sent>
-				<date notBefore="1780-05-01" notAfter="1780-05-31" when="1780-05-15">St. Petersburg, Mai 1780</date>
+				<date notBefore="1780-05-01" notAfter="1780-05-31">St. Petersburg, Mai 1780</date>
 				<location ref="46" />
 				<person ref="1" />
 			</sent>
@@ -5137,7 +5129,7 @@
 
 		<letterDesc letter="340">
 			<sent>
-				<date notBefore="1780-07-05" notAfter="1780-08-31" when="1780-07-30">St. Petersburg, zwischen 5. Juli und Ende August 1780</date>
+				<date notBefore="1780-07-05" notAfter="1780-08-31">St. Petersburg, zwischen 5. Juli und Ende August 1780</date>
 				<location ref="46" />
 				<person ref="1" />
 			</sent>
@@ -5167,9 +5159,9 @@
 
 		<letterDesc letter="342">
 			<sent>
-				<date notBefore="1780-09-01" notAfter="1780-10-31" when="1780-09-30">unbekannter Ort, nach der Abreise aus Aya, wohl September/Oktober
+				<date notBefore="1780-09-01" notAfter="1780-10-31">unbekannter Ort, nach der Abreise aus Aya, wohl September/Oktober
 					1780</date>
-				<location ref="51" cert="low" />
+				<location ref="51" cert="low"/>
 				<person ref="1" />
 			</sent>
 			<received>
@@ -5183,8 +5175,8 @@
 
 		<letterDesc letter="343">
 			<sent>
-				<date notBefore="1779-06-01" notAfter="1780-12-31" when="1780-10-30">unbekannter Ort, Mitte 1779 bis Ende 1780</date>
-				<location ref="51" cert="low" />
+				<date notBefore="1779-06-01" notAfter="1780-12-31">unbekannter Ort, Mitte 1779 bis Ende 1780</date>
+				<location ref="51" cert="low">vmtl.</location>
 				<person ref="1" />
 			</sent>
 			<received>
@@ -5198,8 +5190,8 @@
 
 		<letterDesc letter="344">
 			<sent>
-				<date notBefore="1780-11-01" notAfter="1780-11-30" when="1780-11-05">Dorpat (Tartu)?, November 1780</date>
-				<location ref="1" cert="low" />
+				<date notBefore="1780-11-01" notAfter="1780-11-30">Dorpat (Tartu)?, November 1780</date>
+				<location ref="1" cert="low">vmtl.</location>
 				<person ref="1" />
 			</sent>
 			<received>
@@ -5213,7 +5205,7 @@
 
 		<letterDesc letter="345">
 			<sent>
-				<date notBefore="1780-11-01" notAfter="1780-11-30" when="1780-10-15">auf dem Weg nach Ohlershoff, November 1780</date>
+				<date notBefore="1780-11-01" notAfter="1780-11-30">auf dem Weg nach Ohlershoff, November 1780</date>
 				<location ref="52" />
 				<person ref="1" />
 			</sent>
@@ -5228,7 +5220,7 @@
 
 		<letterDesc letter="346">
 			<sent>
-				<date notBefore="1780-11-26" notAfter="1780-12-26" when="1780-11-26">Ohlershoff, 26. November (oder Dezember?) 1780</date><!-- Da der genaue Monat unsicher ist, habe ich die Datierung als Zeitspanne aufgefasst -->
+				<date notBefore="1780-11-26" notAfter="1780-12-26">Ohlershoff, 26. November (oder Dezember?) 1780</date><!-- Da der genaue Monat unsicher ist, habe ich die Datierung als Zeitspanne aufgefasst -->
 				<location ref="49" />
 				<person ref="1" />
 			</sent>
@@ -5333,7 +5325,7 @@
 
 		<letterDesc letter="353">
 			<sent>
-				<date notBefore="1782-01-01" notAfter="1782-12-31" when="1782-06-01">Moskau, 1782</date><!-- Abschrift? -->
+				<date notBefore="1782-01-01" notAfter="1782-12-31">Moskau, 1782</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5371,7 +5363,7 @@
 				<location ref="50" />
 				<person ref="1" />
 			</received>
-			<hasOriginal value="false" /><!-- Zeitgenössische Abschrift -->
+			<hasOriginal value="false" />
 			<isProofread value="true" />
 			<isDraft value="false" />
 		</letterDesc>
@@ -5393,7 +5385,7 @@
 
 		<letterDesc letter="357">
 			<sent>
-				<date notBefore="1787-09-01" notAfter="1787-09-30" when="1787-09-15">Moskau, September 1787</date>
+				<date notBefore="1787-09-01" notAfter="1787-09-30">Moskau, September 1787</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5408,7 +5400,7 @@
 
 		<letterDesc letter="358">
 			<sent>
-				<date notBefore="1788-11-05" when="1788-11-15">Moskau, nach dem 4. November 1788</date>
+				<date notBefore="1788-11-04">Moskau, nach dem 4. November 1788</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5423,7 +5415,7 @@
 
 		<letterDesc letter="359">
 			<sent>
-				<date notAfter="1788-12-31" when="1788-12-01">Moskau, wahrscheinlich Ende 1788</date>
+				<date notAfter="1788-12-31">Moskau, wahrscheinlich Ende 1788</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5438,7 +5430,7 @@
 
 		<letterDesc letter="360">
 			<sent>
-				<date notAfter="1788-12-31" when="1788-12-15">Moskau, wahrscheinlich Ende 1788</date>
+				<date notAfter="1788-12-31">Moskau, wahrscheinlich Ende 1788</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5453,7 +5445,7 @@
 
 		<letterDesc letter="361">
 			<sent>
-				<date notBefore="1788-01-01" notAfter="1788-12-31" when="1788-12-30">Moskau, 1788</date>
+				<date notBefore="1788-01-01" notAfter="1788-12-31">Moskau, 1788</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5470,7 +5462,7 @@
 
 		<letterDesc letter="362">
 			<sent>
-				<date notBefore="1789-01-01" notAfter="1789-12-31" when="1789-01-15">Moskau, 1789</date>
+				<date notBefore="1789-01-01" notAfter="1789-12-31">Moskau, 1789</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5485,7 +5477,7 @@
 
 		<letterDesc letter="363">
 			<sent>
-				<date notBefore="1789-05-01" when="1789-05-15">Moskau, ab Mai 1789</date>
+				<date notBefore="1789-05-01">Moskau, ab Mai 1789</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5500,7 +5492,7 @@
 
 		<letterDesc letter="364">
 			<sent>
-				<date notBefore="1789-01-01" notAfter="1789-12-31" when="1789-06-01">Moskau, etwa 1789</date><!-- Kann das Jahr 1789 hier als Zeitspanne verwendet werden? -->
+				<date notBefore="1789-01-01" notAfter="1789-12-31">Moskau, etwa 1789</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5515,7 +5507,7 @@
 
 		<letterDesc letter="365">
 			<sent>
-				<date notBefore="1789-04-03" when="1789-06-15">Moskau, nach dem 2. April 1789</date>
+				<date notBefore="1789-04-02">Moskau, nach dem 2. April 1789</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5530,7 +5522,7 @@
 
 		<letterDesc letter="366">
 			<sent>
-				<date notBefore="1789-01-01" notAfter="1789-12-31" when="1789-07-01">Moskau, um 1789</date><!-- Kann hier das Jahr 1789 als Zeitspanne verwendet werden? -->
+				<date notBefore="1789-01-01" notAfter="1789-12-31">Moskau, um 1789</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5545,7 +5537,7 @@
 
 		<letterDesc letter="367">
 			<sent>
-				<date notBefore="1790-01-01" notAfter="1790-12-31" when="1790-06-15">Moskau, um 1790</date>
+				<date notBefore="1790-01-01" notAfter="1790-12-31">Moskau, um 1790</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5560,15 +5552,14 @@
 
 		<letterDesc letter="368">
 			<sent>
-				<date notBefore="1790-09-01" notAfter="1790-11-30" when="1790-10-01">Moskau, etwa Herbst 1790</date>
+				<date notBefore="1790-09-01" notAfter="1790-11-30">Moskau, etwa Herbst 1790</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
 			<received>
 				<location ref="44" />
 				<person ref="4" />
-				<person ref="5" /><!-- Ist Dorothea Lenz die in diesem Brief angesprochene Schwester von
-				Lenz? -->
+				<person ref="5" />
 			</received>
 			<hasOriginal value="true" />
 			<isProofread value="true" />
@@ -5577,7 +5568,7 @@
 
 		<letterDesc letter="369">
 			<sent>
-				<date notBefore="1790-01-01" notAfter="1790-12-31" when="1790-11-01">Moskau, um 1790</date>
+				<date notBefore="1790-01-01" notAfter="1790-12-31">Moskau, um 1790</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5592,7 +5583,7 @@
 
 		<letterDesc letter="370">
 			<sent>
-				<date notBefore="1790-11-01" notAfter="1790-11-30" when="1790-11-02">Moskau, wahrscheinlich November 1790</date>
+				<date notBefore="1790-11-01" notAfter="1790-11-30">Moskau, wahrscheinlich November 1790</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
@@ -5637,7 +5628,7 @@
 
 		<letterDesc letter="373">
 			<sent>
-				<date notBefore="1790-03-01" when="1791-07-01">Moskau, ab März 1790</date>
+				<date notBefore="1790-03-01">Moskau, ab März 1790</date>
 				<location ref="50" />
 				<person ref="1" />
 			</sent>
diff --git a/data/xml/references.xml b/data/xml/references.xml
index 55d5209..b540f3b 100644
--- a/data/xml/references.xml
+++ b/data/xml/references.xml
@@ -400,6 +400,8 @@
 			<locationDef index="61" name="Lübeck" ref="http://d-nb.info/gnd/4036483-5" />
 			
 			<locationDef index="62" name="Vasula (Wassula)" />
+			
+			<locationDef index="63" name="Karlsruhe" ref="http://d-nb.info/gnd/4029713-5" />
 
 
 		</locationDefs>