diff --git a/schema/de/wegaWorks.isosch b/schema/de/wegaWorks.isosch
index 79fcac27..0be90e2a 100644
--- a/schema/de/wegaWorks.isosch
+++ b/schema/de/wegaWorks.isosch
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <schema xmlns="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
    <title>ISO Schematron rules</title>
-   <!-- This file generated 2020-10-07T15:43:30.383+02:00 by 'extract-isosch.xsl'. -->
+   <!-- This file generated 2020-10-15T22:02:18.427+02:00 by 'extract-isosch.xsl'. -->
 
 <!-- ********************* -->
 <!-- namespaces, declared: -->
diff --git a/schema/de/wegaWorks.rng b/schema/de/wegaWorks.rng
index d8dea155..abab3a67 100644
--- a/schema/de/wegaWorks.rng
+++ b/schema/de/wegaWorks.rng
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <grammar xmlns="http://relaxng.org/ns/structure/1.0" xmlns:xlink="http://www.w3.org/1999/xlink" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes" ns="http://www.music-encoding.org/ns/mei">
   <!--
-Schema generated from ODD source 2020-10-07T15:43:28Z. 
+Schema generated from ODD source 2020-10-15T22:02:16Z. 
 Edition: 2013 Release
 Edition Location: http://www.tei-c.org/Vault/P5//
   
@@ -3968,6 +3968,7 @@ Edition Location: http://www.tei-c.org/Vault/P5//
       <ref name="dynam"/>
       <ref name="tempo"/>
       <ref name="model.controleventLike.cmn"/>
+      <ref name="cpMark"/>
     </choice>
   </define>
   <define name="model.dateLike">
@@ -4004,22 +4005,44 @@ Edition Location: http://www.tei-c.org/Vault/P5//
     </choice>
   </define>
   <define name="model.editorialLike">
-    <notAllowed/>
+    <choice>
+      <ref name="abbr"/>
+      <ref name="expan"/>
+    </choice>
   </define>
   <define name="model.editorialLike_alternation">
-    <notAllowed/>
+    <choice>
+      <ref name="abbr"/>
+      <ref name="expan"/>
+    </choice>
   </define>
   <define name="model.editorialLike_sequence">
-    <empty/>
+    <ref name="abbr"/>
+    <ref name="expan"/>
   </define>
   <define name="model.editorialLike_sequenceOptional">
-    <empty/>
+    <optional>
+      <ref name="abbr"/>
+    </optional>
+    <optional>
+      <ref name="expan"/>
+    </optional>
   </define>
   <define name="model.editorialLike_sequenceOptionalRepeatable">
-    <empty/>
+    <zeroOrMore>
+      <ref name="abbr"/>
+    </zeroOrMore>
+    <zeroOrMore>
+      <ref name="expan"/>
+    </zeroOrMore>
   </define>
   <define name="model.editorialLike_sequenceRepeatable">
-    <notAllowed/>
+    <oneOrMore>
+      <ref name="abbr"/>
+    </oneOrMore>
+    <oneOrMore>
+      <ref name="expan"/>
+    </oneOrMore>
   </define>
   <define name="model.endingLike">
     <notAllowed/>
@@ -4093,6 +4116,7 @@ Edition Location: http://www.tei-c.org/Vault/P5//
   <define name="model.labelLike">
     <choice>
       <ref name="label"/>
+      <ref name="labelAbbr"/>
     </choice>
   </define>
   <define name="model.layerDefLike">
@@ -8442,8 +8466,16 @@ Empfohlene Werte sind: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_score;
     <ref name="att.handident.attributes"/>
     <ref name="att.sequence.attributes"/>
   </define>
+  <define name="model.choicePart">
+    <choice>
+      <ref name="model.editorialLike"/>
+      <ref name="model.editLike"/>
+      <ref name="sic"/>
+    </choice>
+  </define>
   <define name="model.editLike">
     <choice>
+      <ref name="choice"/>
       <ref name="subst"/>
     </choice>
   </define>
@@ -8458,6 +8490,40 @@ Empfohlene Werte sind: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_score;
       <ref name="supplied"/>
     </choice>
   </define>
+  <define name="abbr">
+    <element name="abbr">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">(abbreviation) – A generic element for 1) a shortened form of a word, including an acronym or 2) a shorthand notation.</a:documentation>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.textphraseLike"/>
+          <ref name="model.eventLike"/>
+          <ref name="model.controleventLike"/>
+          <ref name="model.lyricsLike"/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+          <ref name="model.eventLike.measureFilling"/>
+          <ref name="model.noteModifierLike"/>
+          <ref name="model.sectionLike"/>
+          <ref name="model.measureLike"/>
+          <ref name="model.staffLike"/>
+          <ref name="model.layerLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <ref name="att.edit.attributes"/>
+      <ref name="att.lang.attributes"/>
+      <ref name="att.trans.attributes"/>
+      <ref name="att.typed.attributes"/>
+      <optional>
+        <attribute name="expan">
+          <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">records the expansion of a text abbreviation.</a:documentation>
+          <text/>
+        </attribute>
+      </optional>
+      <empty/>
+    </element>
+  </define>
   <define name="add">
     <element name="add">
       <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">(addition) – Marks an addition to the text. </a:documentation>
@@ -8484,6 +8550,16 @@ Empfohlene Werte sind: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_score;
       <empty/>
     </element>
   </define>
+  <define name="choice">
+    <element name="choice">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">Groups a number of alternative encodings for the same point in a text. </a:documentation>
+      <zeroOrMore>
+        <ref name="model.choicePart"/>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <empty/>
+    </element>
+  </define>
   <define name="damage">
     <element name="damage">
       <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">Contains an area of damage to the physical medium.</a:documentation>
@@ -8549,6 +8625,40 @@ Empfohlene Werte sind: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_score;
       <empty/>
     </element>
   </define>
+  <define name="expan">
+    <element name="expan">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">(expansion) – Contains the expansion of an abbreviation.</a:documentation>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.textphraseLike"/>
+          <ref name="model.eventLike"/>
+          <ref name="model.controleventLike"/>
+          <ref name="model.lyricsLike"/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+          <ref name="model.eventLike.measureFilling"/>
+          <ref name="model.noteModifierLike"/>
+          <ref name="model.sectionLike"/>
+          <ref name="model.measureLike"/>
+          <ref name="model.staffLike"/>
+          <ref name="model.layerLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <ref name="att.edit.attributes"/>
+      <ref name="att.lang.attributes"/>
+      <ref name="att.trans.attributes"/>
+      <ref name="att.typed.attributes"/>
+      <optional>
+        <attribute name="abbr">
+          <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">captures the unabbreviated form of the text.</a:documentation>
+          <text/>
+        </attribute>
+      </optional>
+      <empty/>
+    </element>
+  </define>
   <define name="gap">
     <element name="gap">
       <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">Indicates a point where material has been omitted in a transcription, whether as part of sampling practice or for editorial reasons described in the MEI header. </a:documentation>
@@ -8659,6 +8769,35 @@ Empfohlene Werte sind: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_score;
       <empty/>
     </element>
   </define>
+  <define name="labelAbbr">
+    <element name="labelAbbr" ns="http://www.music-encoding.org/ns/mei">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"/>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <ref name="att.lang.attributes"/>
+      <empty/>
+    </element>
+  </define>
+  <define name="cpMark">
+    <element name="cpMark" ns="http://www.music-encoding.org/ns/mei">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"/>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <empty/>
+    </element>
+  </define>
   <start>
     <choice>
       <ref name="mei"/>
diff --git a/schema/en/wegaWorks.rng b/schema/en/wegaWorks.rng
index a89d1b2e..20556c3f 100644
--- a/schema/en/wegaWorks.rng
+++ b/schema/en/wegaWorks.rng
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <grammar xmlns="http://relaxng.org/ns/structure/1.0" xmlns:xlink="http://www.w3.org/1999/xlink" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes" ns="http://www.music-encoding.org/ns/mei">
   <!--
-Schema generated from ODD source 2020-10-07T15:43:41Z. 
+Schema generated from ODD source 2020-10-15T22:03:02Z. 
 Edition: 2013 Release
 Edition Location: http://www.tei-c.org/Vault/P5//
   
@@ -3968,6 +3968,7 @@ Edition Location: http://www.tei-c.org/Vault/P5//
       <ref name="dynam"/>
       <ref name="tempo"/>
       <ref name="model.controleventLike.cmn"/>
+      <ref name="cpMark"/>
     </choice>
   </define>
   <define name="model.dateLike">
@@ -4004,22 +4005,44 @@ Edition Location: http://www.tei-c.org/Vault/P5//
     </choice>
   </define>
   <define name="model.editorialLike">
-    <notAllowed/>
+    <choice>
+      <ref name="abbr"/>
+      <ref name="expan"/>
+    </choice>
   </define>
   <define name="model.editorialLike_alternation">
-    <notAllowed/>
+    <choice>
+      <ref name="abbr"/>
+      <ref name="expan"/>
+    </choice>
   </define>
   <define name="model.editorialLike_sequence">
-    <empty/>
+    <ref name="abbr"/>
+    <ref name="expan"/>
   </define>
   <define name="model.editorialLike_sequenceOptional">
-    <empty/>
+    <optional>
+      <ref name="abbr"/>
+    </optional>
+    <optional>
+      <ref name="expan"/>
+    </optional>
   </define>
   <define name="model.editorialLike_sequenceOptionalRepeatable">
-    <empty/>
+    <zeroOrMore>
+      <ref name="abbr"/>
+    </zeroOrMore>
+    <zeroOrMore>
+      <ref name="expan"/>
+    </zeroOrMore>
   </define>
   <define name="model.editorialLike_sequenceRepeatable">
-    <notAllowed/>
+    <oneOrMore>
+      <ref name="abbr"/>
+    </oneOrMore>
+    <oneOrMore>
+      <ref name="expan"/>
+    </oneOrMore>
   </define>
   <define name="model.endingLike">
     <notAllowed/>
@@ -4093,6 +4116,7 @@ Edition Location: http://www.tei-c.org/Vault/P5//
   <define name="model.labelLike">
     <choice>
       <ref name="label"/>
+      <ref name="labelAbbr"/>
     </choice>
   </define>
   <define name="model.layerDefLike">
@@ -8443,8 +8467,16 @@ Suggested values include: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_sco
     <ref name="att.handident.attributes"/>
     <ref name="att.sequence.attributes"/>
   </define>
+  <define name="model.choicePart">
+    <choice>
+      <ref name="model.editorialLike"/>
+      <ref name="model.editLike"/>
+      <ref name="sic"/>
+    </choice>
+  </define>
   <define name="model.editLike">
     <choice>
+      <ref name="choice"/>
       <ref name="subst"/>
     </choice>
   </define>
@@ -8459,6 +8491,40 @@ Suggested values include: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_sco
       <ref name="supplied"/>
     </choice>
   </define>
+  <define name="abbr">
+    <element name="abbr">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">(abbreviation) – A generic element for 1) a shortened form of a word, including an acronym or 2) a shorthand notation.</a:documentation>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.textphraseLike"/>
+          <ref name="model.eventLike"/>
+          <ref name="model.controleventLike"/>
+          <ref name="model.lyricsLike"/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+          <ref name="model.eventLike.measureFilling"/>
+          <ref name="model.noteModifierLike"/>
+          <ref name="model.sectionLike"/>
+          <ref name="model.measureLike"/>
+          <ref name="model.staffLike"/>
+          <ref name="model.layerLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <ref name="att.edit.attributes"/>
+      <ref name="att.lang.attributes"/>
+      <ref name="att.trans.attributes"/>
+      <ref name="att.typed.attributes"/>
+      <optional>
+        <attribute name="expan">
+          <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">records the expansion of a text abbreviation.</a:documentation>
+          <text/>
+        </attribute>
+      </optional>
+      <empty/>
+    </element>
+  </define>
   <define name="add">
     <element name="add">
       <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">(addition) – Marks an addition to the text. </a:documentation>
@@ -8485,6 +8551,16 @@ Suggested values include: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_sco
       <empty/>
     </element>
   </define>
+  <define name="choice">
+    <element name="choice">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">Groups a number of alternative encodings for the same point in a text. </a:documentation>
+      <zeroOrMore>
+        <ref name="model.choicePart"/>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <empty/>
+    </element>
+  </define>
   <define name="damage">
     <element name="damage">
       <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">Contains an area of damage to the physical medium.</a:documentation>
@@ -8550,6 +8626,40 @@ Suggested values include: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_sco
       <empty/>
     </element>
   </define>
+  <define name="expan">
+    <element name="expan">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">(expansion) – Contains the expansion of an abbreviation.</a:documentation>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.textphraseLike"/>
+          <ref name="model.eventLike"/>
+          <ref name="model.controleventLike"/>
+          <ref name="model.lyricsLike"/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+          <ref name="model.eventLike.measureFilling"/>
+          <ref name="model.noteModifierLike"/>
+          <ref name="model.sectionLike"/>
+          <ref name="model.measureLike"/>
+          <ref name="model.staffLike"/>
+          <ref name="model.layerLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <ref name="att.edit.attributes"/>
+      <ref name="att.lang.attributes"/>
+      <ref name="att.trans.attributes"/>
+      <ref name="att.typed.attributes"/>
+      <optional>
+        <attribute name="abbr">
+          <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">captures the unabbreviated form of the text.</a:documentation>
+          <text/>
+        </attribute>
+      </optional>
+      <empty/>
+    </element>
+  </define>
   <define name="gap">
     <element name="gap">
       <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0">Indicates a point where material has been omitted in a transcription, whether as part of sampling practice or for editorial reasons described in the MEI header. </a:documentation>
@@ -8660,6 +8770,35 @@ Suggested values include: 1] ms; 2] ms_score; 3] ms_piano_score; 4] ms_vocal_sco
       <empty/>
     </element>
   </define>
+  <define name="labelAbbr">
+    <element name="labelAbbr" ns="http://www.music-encoding.org/ns/mei">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"/>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <ref name="att.lang.attributes"/>
+      <empty/>
+    </element>
+  </define>
+  <define name="cpMark">
+    <element name="cpMark" ns="http://www.music-encoding.org/ns/mei">
+      <a:documentation xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"/>
+      <zeroOrMore>
+        <choice>
+          <text/>
+          <ref name="model.editLike"/>
+          <ref name="model.transcriptionLike"/>
+        </choice>
+      </zeroOrMore>
+      <ref name="att.common.attributes"/>
+      <empty/>
+    </element>
+  </define>
   <start>
     <choice>
       <ref name="mei"/>
diff --git a/src/WeGA_works.odd.xml b/src/WeGA_works.odd.xml
index a37c0531..9737cb8e 100644
--- a/src/WeGA_works.odd.xml
+++ b/src/WeGA_works.odd.xml
@@ -60,7 +60,7 @@
                     <moduleRef key="MEI.cmnOrnaments" include="trill turn"/>
                     <moduleRef key="MEI.lyrics" include="verse"/>
                     <!-- for future use  -->
-                    <moduleRef key="MEI.edittrans" include="add damage del gap restore sic subst supplied"/>
+                    <moduleRef key="MEI.edittrans" include="abbr add choice cpMark damage del expan gap restore sic subst supplied"/>
 
                     <specGrpRef target="WeGA_common.odd.xml#wega-patterns"/>
                     <specGrpRef target="WeGA_common.odd.xml#wega-lists"/>
@@ -131,6 +131,46 @@
                         </attList>
                     </classSpec>
 
+                    <elementSpec ident="labelAbbr" module="MEI.shared" mode="add" ns="http://www.music-encoding.org/ns/mei">
+                        <classes>
+                            <memberOf key="att.common"/>
+                            <memberOf key="att.lang"/>
+                            <memberOf key="model.labelLike"/>
+                        </classes>
+                        <content>
+                            <rng:zeroOrMore>
+                                <rng:choice>
+                                    <rng:text/>
+                                    <rng:ref name="model.textPhraseLike.limited" />
+                                    <rng:ref name="model.editLike" />
+                                    <rng:ref name="model.transcriptionLike" />
+                                </rng:choice>
+                            </rng:zeroOrMore>
+                        </content>
+                    </elementSpec>
+                    
+                    <elementSpec ident="cpMark" module="MEI.edittrans" mode="add" ns="http://www.music-encoding.org/ns/mei">
+                        <classes>
+                            <memberOf key="att.common"/>
+                            <memberOf key="att.facsimile"/>
+                            <memberOf key="att.cpMark.log"/>
+                            <memberOf key="att.cpMark.vis"/>
+                            <memberOf key="att.cpMark.ges"/>
+                            <memberOf key="att.cpMark.anl"/>
+                            <memberOf key="model.controleventLike"/>
+                        </classes>
+                        <content>
+                            <rng:zeroOrMore>
+                                <rng:choice>
+                                    <rng:text/>
+                                    <rng:ref name="model.textPhraseLike.limited" />
+                                    <rng:ref name="model.editLike" />
+                                    <rng:ref name="model.transcriptionLike" />
+                                </rng:choice>
+                            </rng:zeroOrMore>
+                        </content>
+                    </elementSpec>
+
                     <elementSpec ident="mei" module="MEI.shared" mode="change"
                         ns="http://www.music-encoding.org/ns/mei">
                         <desc versionDate="2013-11-11" xml:lang="en">contains a single
@@ -697,7 +737,7 @@
                             <memberOf key="att.common.anl" mode="add"/>
                         </classes>
                     </elementSpec> 
-
+                    
                     <elementSpec ident="bibl" module="MEI.shared" mode="change"
                         ns="http://www.music-encoding.org/ns/mei">
                         <content>