diff --git a/shacl12-core/images/Makefile b/shacl12-core/images/Makefile
new file mode 100644
index 00000000..32a5e100
--- /dev/null
+++ b/shacl12-core/images/Makefile
@@ -0,0 +1,4 @@
+all: SHACL-UML.svg path-EBNF.svg
+
+%.svg: %.puml
+	plantuml -Tsvg $^
diff --git a/shacl12-core/images/SHACL-UML.puml b/shacl12-core/images/SHACL-UML.puml
new file mode 100644
index 00000000..feea87ea
--- /dev/null
+++ b/shacl12-core/images/SHACL-UML.puml
@@ -0,0 +1,53 @@
+@startuml
+hide circles
+hide empty members
+skinparam pathHoverColor red ' on cover, highlight blue links as red
+' skinparam topurl https://raw.githack.com/w3c/data-shapes/master/shacl12-core/index.html ' links resolve to anchors in current HTML page, when the SVG is embedded
+
+class "<color:blue><u>sh:Shape" as Shape [[#shapes]] {
+  [[#targetClass sh:targetClass]] : rdfs:Class
+  [[#targetNode sh:targetNode]] : any
+  [[#targetSubjectsOf sh:targetSubjectsOf]] : rdf:Property
+  [[#targetObjectsOf sh:targetObjectsOf]] : rdf:Property
+  ....
+  [[#deactivated sh:deactivated]] : xsd:boolean
+  [[#message sh:message]] : xsd:string or rdf:langString
+  [[#severity sh:severity]] : sh:Severity
+}
+
+class "<color:blue><u>sh:NodeShape" as NodeShape [[#node-shapes]] {
+  [[#constraints Constraint parameters]], for example:
+  [[#NodeKindConstraintComponent sh:nodeKind]] a sh:NodeKind
+  [[#ClosedConstraintComponent sh:closed]] : xsd:boolean or [[#syntax-rule-closed-datatype sh:ByTypes]]
+  [[#ClosedConstraintComponent sh:ignoredProperties]] : list
+  [[#OrConstraintComponent sh:or]], [[#AndConstraintComponent sh:and]], [[#XoneConstraintComponent sh:xone]] : list of Shape
+  [[#NotConstraintComponent sh:not]] : [[#shapes sh:Shape]]
+  ...
+}
+
+class "<color:blue><u>sh:PropertyShape" as PropertyShape [[#property-shapes]] {
+  [[#constraints Constraint parameters]], for example:
+  [[#MinCountConstraintComponent sh:minCount]], [[#MaxCountConstraintComponent sh:maxCount]] : xsd:integer
+  [[#MinLengthConstraintComponent sh:minLength]], [[#MaxLengthConstraintComponent sh:maxLength]] : xsd:integer
+  [[#ClassConstraintComponent sh:class]] or [[#DatatypeConstraintComponent sh:datatype]] : IRI or list of IRIs
+  [[#NodeConstraintComponent sh:node]] : [[#node-shapes sh:NodeShape]]
+  ...
+  ....
+  [[#name sh:name]] : xsd:string or rdf:langString
+  [[#description sh:description]] : xsd:string or rdf:langString
+  [[#syntax-rule-path-defaultValue sh:defaultValue]] : any
+  [[#syntax-rule-path-defaultValue sh:values]] : any
+  [[#order sh:order]] : xsd:integer or xsd:decimal
+  [[#property-paths sh:path]] : predicate or list or blank node
+}
+
+class "<color:blue><u>sh:PropertyGroup" as PropertyGroup [[#group sh:group]] {
+  [[#group sh:order]] : xsd:integer or xsd:decimal
+  ... eg rdfs:label
+}
+
+Shape <|-- NodeShape
+Shape <|-- PropertyShape
+NodeShape -> PropertyShape : [[#property-shapes sh:property]] *
+PropertyShape --> PropertyGroup :  [[#group sh:group]]
+@enduml
diff --git a/shacl12-core/images/SHACL-UML.svg b/shacl12-core/images/SHACL-UML.svg
new file mode 100644
index 00000000..2a34e1d6
--- /dev/null
+++ b/shacl12-core/images/SHACL-UML.svg
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="us-ascii" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentStyleType="text/css" height="645px" preserveAspectRatio="none" style="width:657px;height:645px;background:#FFFFFF;" version="1.1" viewBox="0 0 657 645" width="657px" zoomAndPan="magnify"><defs><style type="text/css"><![CDATA[path:hover { stroke: #FFFFFF !important;}]]></style></defs><g><!--class Shape--><a href="#shapes" target="_top" title="#shapes" xlink:actuate="onRequest" xlink:href="#shapes" xlink:show="new" xlink:title="#shapes" xlink:type="simple"><g id="elem_Shape"><rect codeLine="6" fill="#F1F1F1" height="166.875" id="Shape" rx="2.5" ry="2.5" style="stroke:#181818;stroke-width:0.5;" width="266" x="189.5" y="7"/><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="60" x="292.5" y="26.5332">sh:Shape</text><line style="stroke:#181818;stroke-width:0.5;" x1="190.5" x2="454.5" y1="34.6094" y2="34.6094"/><a href="#targetClass" target="_top" title="#targetClass" xlink:actuate="onRequest" xlink:href="#targetClass" xlink:show="new" xlink:title="#targetClass" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="91" x="195.5" y="53.1426">sh:targetClass</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="71" x="290.5" y="53.1426">: rdfs:Class</text><a href="#targetNode" target="_top" title="#targetNode" xlink:actuate="onRequest" xlink:href="#targetNode" xlink:show="new" xlink:title="#targetNode" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="89" x="195.5" y="70.752">sh:targetNode</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="31" x="288.5" y="70.752">: any</text><a href="#targetSubjectsOf" target="_top" title="#targetSubjectsOf" xlink:actuate="onRequest" xlink:href="#targetSubjectsOf" xlink:show="new" xlink:title="#targetSubjectsOf" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="125" x="195.5" y="88.3613">sh:targetSubjectsOf</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="83" x="324.5" y="88.3613">: rdf:Property</text><a href="#targetObjectsOf" target="_top" title="#targetObjectsOf" xlink:actuate="onRequest" xlink:href="#targetObjectsOf" xlink:show="new" xlink:title="#targetObjectsOf" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="119" x="195.5" y="105.9707">sh:targetObjectsOf</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="83" x="318.5" y="105.9707">: rdf:Property</text><line style="stroke:#181818;stroke-width:1.0;stroke-dasharray:1.0,2.0;" x1="190.5" x2="454.5" y1="113.0469" y2="113.0469"/><a href="#deactivated" target="_top" title="#deactivated" xlink:actuate="onRequest" xlink:href="#deactivated" xlink:show="new" xlink:title="#deactivated" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="92" x="195.5" y="131.5801">sh:deactivated</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="84" x="291.5" y="131.5801">: xsd:boolean</text><a href="#message" target="_top" title="#message" xlink:actuate="onRequest" xlink:href="#message" xlink:show="new" xlink:title="#message" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="76" x="195.5" y="149.1895">sh:message</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="174" x="275.5" y="149.1895">: xsd:string or rdf:langString</text><a href="#severity" target="_top" title="#severity" xlink:actuate="onRequest" xlink:href="#severity" xlink:show="new" xlink:title="#severity" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="68" x="195.5" y="166.7988">sh:severity</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="78" x="267.5" y="166.7988">: sh:Severity</text></g></a><!--class NodeShape--><a href="#node-shapes" target="_top" title="#node-shapes" xlink:actuate="onRequest" xlink:href="#node-shapes" xlink:show="new" xlink:title="#node-shapes" xlink:type="simple"><g id="elem_NodeShape"><rect codeLine="17" fill="#F1F1F1" height="158.875" id="NodeShape" rx="2.5" ry="2.5" style="stroke:#181818;stroke-width:0.5;" width="255" x="7" y="282.9"/><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="93" x="88" y="302.4332">sh:NodeShape</text><line style="stroke:#181818;stroke-width:0.5;" x1="8" x2="261" y1="310.5094" y2="310.5094"/><a href="#constraints" target="_top" title="#constraints" xlink:actuate="onRequest" xlink:href="#constraints" xlink:show="new" xlink:title="#constraints" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="141" x="13" y="329.0426">Constraint parameters</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="85" x="154" y="329.0426">, for example:</text><a href="#NodeKindConstraintComponent" target="_top" title="#NodeKindConstraintComponent" xlink:actuate="onRequest" xlink:href="#NodeKindConstraintComponent" xlink:show="new" xlink:title="#NodeKindConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="79" x="13" y="346.652">sh:nodeKind</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="92" x="96" y="346.652">a sh:NodeKind</text><a href="#ClosedConstraintComponent" target="_top" title="#ClosedConstraintComponent" xlink:actuate="onRequest" xlink:href="#ClosedConstraintComponent" xlink:show="new" xlink:title="#ClosedConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="60" x="13" y="364.2613">sh:closed</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="101" x="77" y="364.2613">: xsd:boolean or</text><a href="#syntax-rule-closed-datatype" target="_top" title="#syntax-rule-closed-datatype" xlink:actuate="onRequest" xlink:href="#syntax-rule-closed-datatype" xlink:show="new" xlink:title="#syntax-rule-closed-datatype" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="74" x="182" y="364.2613">sh:ByTypes</text></a><a href="#ClosedConstraintComponent" target="_top" title="#ClosedConstraintComponent" xlink:actuate="onRequest" xlink:href="#ClosedConstraintComponent" xlink:show="new" xlink:title="#ClosedConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="132" x="13" y="381.8707">sh:ignoredProperties</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="25" x="149" y="381.8707">: list</text><a href="#OrConstraintComponent" target="_top" title="#OrConstraintComponent" xlink:actuate="onRequest" xlink:href="#OrConstraintComponent" xlink:show="new" xlink:title="#OrConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="32" x="13" y="399.4801">sh:or</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="45" y="399.4801">,</text><a href="#AndConstraintComponent" target="_top" title="#AndConstraintComponent" xlink:actuate="onRequest" xlink:href="#AndConstraintComponent" xlink:show="new" xlink:title="#AndConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="43" x="53" y="399.4801">sh:and</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="96" y="399.4801">,</text><a href="#XoneConstraintComponent" target="_top" title="#XoneConstraintComponent" xlink:actuate="onRequest" xlink:href="#XoneConstraintComponent" xlink:show="new" xlink:title="#XoneConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="49" x="104" y="399.4801">sh:xone</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="86" x="157" y="399.4801">: list of Shape</text><a href="#NotConstraintComponent" target="_top" title="#NotConstraintComponent" xlink:actuate="onRequest" xlink:href="#NotConstraintComponent" xlink:show="new" xlink:title="#NotConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="39" x="13" y="417.0895">sh:not</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="56" y="417.0895">:</text><a href="#shapes" target="_top" title="#shapes" xlink:actuate="onRequest" xlink:href="#shapes" xlink:show="new" xlink:title="#shapes" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="60" x="64" y="417.0895">sh:Shape</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="12" x="13" y="434.6988">...</text></g></a><!--class PropertyShape--><a href="#property-shapes" target="_top" title="#property-shapes" xlink:actuate="onRequest" xlink:href="#property-shapes" xlink:show="new" xlink:title="#property-shapes" xlink:type="simple"><g id="elem_PropertyShape"><rect codeLine="27" fill="#F1F1F1" height="254.9219" id="PropertyShape" rx="2.5" ry="2.5" style="stroke:#181818;stroke-width:0.5;" width="278" x="372.5" y="234.88"/><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="114" x="454.5" y="254.4132">sh:PropertyShape</text><line style="stroke:#181818;stroke-width:0.5;" x1="373.5" x2="649.5" y1="262.4894" y2="262.4894"/><a href="#constraints" target="_top" title="#constraints" xlink:actuate="onRequest" xlink:href="#constraints" xlink:show="new" xlink:title="#constraints" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="141" x="378.5" y="281.0226">Constraint parameters</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="85" x="519.5" y="281.0226">, for example:</text><a href="#MinCountConstraintComponent" target="_top" title="#MinCountConstraintComponent" xlink:actuate="onRequest" xlink:href="#MinCountConstraintComponent" xlink:show="new" xlink:title="#MinCountConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="79" x="378.5" y="298.632">sh:minCount</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="457.5" y="298.632">,</text><a href="#MaxCountConstraintComponent" target="_top" title="#MaxCountConstraintComponent" xlink:actuate="onRequest" xlink:href="#MaxCountConstraintComponent" xlink:show="new" xlink:title="#MaxCountConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="82" x="465.5" y="298.632">sh:maxCount</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="77" x="551.5" y="298.632">: xsd:integer</text><a href="#MinLengthConstraintComponent" target="_top" title="#MinLengthConstraintComponent" xlink:actuate="onRequest" xlink:href="#MinLengthConstraintComponent" xlink:show="new" xlink:title="#MinLengthConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="85" x="378.5" y="316.2413">sh:minLength</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="463.5" y="316.2413">,</text><a href="#MaxLengthConstraintComponent" target="_top" title="#MaxLengthConstraintComponent" xlink:actuate="onRequest" xlink:href="#MaxLengthConstraintComponent" xlink:show="new" xlink:title="#MaxLengthConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="88" x="471.5" y="316.2413">sh:maxLength</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="77" x="563.5" y="316.2413">: xsd:integer</text><a href="#ClassConstraintComponent" target="_top" title="#ClassConstraintComponent" xlink:actuate="onRequest" xlink:href="#ClassConstraintComponent" xlink:show="new" xlink:title="#ClassConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="51" x="378.5" y="333.8507">sh:class</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="13" x="433.5" y="333.8507">or</text><a href="#DatatypeConstraintComponent" target="_top" title="#DatatypeConstraintComponent" xlink:actuate="onRequest" xlink:href="#DatatypeConstraintComponent" xlink:show="new" xlink:title="#DatatypeConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="74" x="450.5" y="333.8507">sh:datatype</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="105" x="528.5" y="333.8507">: IRI or list of IRIs</text><a href="#NodeConstraintComponent" target="_top" title="#NodeConstraintComponent" xlink:actuate="onRequest" xlink:href="#NodeConstraintComponent" xlink:show="new" xlink:title="#NodeConstraintComponent" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="51" x="378.5" y="351.4601">sh:node</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="433.5" y="351.4601">:</text><a href="#node-shapes" target="_top" title="#node-shapes" xlink:actuate="onRequest" xlink:href="#node-shapes" xlink:show="new" xlink:title="#node-shapes" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="93" x="441.5" y="351.4601">sh:NodeShape</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="12" x="378.5" y="369.0695">...</text><line style="stroke:#181818;stroke-width:1.0;stroke-dasharray:1.0,2.0;" x1="373.5" x2="649.5" y1="376.1456" y2="376.1456"/><a href="#name" target="_top" title="#name" xlink:actuate="onRequest" xlink:href="#name" xlink:show="new" xlink:title="#name" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="54" x="378.5" y="394.6788">sh:name</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="174" x="436.5" y="394.6788">: xsd:string or rdf:langString</text><a href="#description" target="_top" title="#description" xlink:actuate="onRequest" xlink:href="#description" xlink:show="new" xlink:title="#description" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="88" x="378.5" y="412.2882">sh:description</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="174" x="470.5" y="412.2882">: xsd:string or rdf:langString</text><a href="#syntax-rule-path-defaultValue" target="_top" title="#syntax-rule-path-defaultValue" xlink:actuate="onRequest" xlink:href="#syntax-rule-path-defaultValue" xlink:show="new" xlink:title="#syntax-rule-path-defaultValue" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="98" x="378.5" y="429.8976">sh:defaultValue</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="31" x="480.5" y="429.8976">: any</text><a href="#syntax-rule-path-defaultValue" target="_top" title="#syntax-rule-path-defaultValue" xlink:actuate="onRequest" xlink:href="#syntax-rule-path-defaultValue" xlink:show="new" xlink:title="#syntax-rule-path-defaultValue" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="60" x="378.5" y="447.507">sh:values</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="31" x="442.5" y="447.507">: any</text><a href="#order" target="_top" title="#order" xlink:actuate="onRequest" xlink:href="#order" xlink:show="new" xlink:title="#order" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="53" x="378.5" y="465.1163">sh:order</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="171" x="435.5" y="465.1163">: xsd:integer or xsd:decimal</text><a href="#property-paths" target="_top" title="#property-paths" xlink:actuate="onRequest" xlink:href="#property-paths" xlink:show="new" xlink:title="#property-paths" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="47" x="378.5" y="482.7257">sh:path</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="196" x="429.5" y="482.7257">: predicate or list or blank node</text></g></a><!--class PropertyGroup--><a href="#group" target="_top" title="#group" xlink:actuate="onRequest" xlink:href="#group" xlink:show="new" xlink:title="#group" xlink:type="simple"><g id="elem_PropertyGroup"><rect codeLine="43" fill="#F1F1F1" height="70.8281" id="PropertyGroup" rx="2.5" ry="2.5" style="stroke:#181818;stroke-width:0.5;" width="240" x="391.5" y="567.8"/><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="113" x="455" y="587.3332">sh:PropertyGroup</text><line style="stroke:#181818;stroke-width:0.5;" x1="392.5" x2="630.5" y1="595.4094" y2="595.4094"/><a href="#group" target="_top" title="#group" xlink:actuate="onRequest" xlink:href="#group" xlink:show="new" xlink:title="#group" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="14" lengthAdjust="spacing" text-decoration="underline" textLength="53" x="397.5" y="613.9426">sh:order</text></a><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="171" x="454.5" y="613.9426">: xsd:integer or xsd:decimal</text><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="94" x="397.5" y="631.552">... eg rdfs:label</text></g></a><!--reverse link Shape to NodeShape--><g id="link_Shape_NodeShape"><path codeLine="48" d="M254.5307,189.0292 C230.4607,223.5792 212.92,248.76 189.18,282.84 " fill="none" id="Shape-backto-NodeShape" style="stroke:#181818;stroke-width:1.0;"/><polygon fill="none" points="264.82,174.26,249.6076,185.5995,259.4538,192.459,264.82,174.26" style="stroke:#181818;stroke-width:1.0;"/></g><!--reverse link Shape to PropertyShape--><g id="link_Shape_PropertyShape"><path codeLine="49" d="M390.8201,189.0007 C404.1701,208.0507 408.33,214.01 422.65,234.47 " fill="none" id="Shape-backto-PropertyShape" style="stroke:#181818;stroke-width:1.0;"/><polygon fill="none" points="380.49,174.26,385.9065,192.4441,395.7337,185.5573,380.49,174.26" style="stroke:#181818;stroke-width:1.0;"/></g><!--link NodeShape to PropertyShape--><g id="link_NodeShape_PropertyShape"><path codeLine="50" d="M262.4,362.34 C297.74,362.34 330.26,362.34 366.21,362.34 " fill="none" id="NodeShape-to-PropertyShape" style="stroke:#181818;stroke-width:1.0;"/><polygon fill="#181818" points="372.21,362.34,363.21,358.34,367.21,362.34,363.21,366.34,372.21,362.34" style="stroke:#181818;stroke-width:1.0;"/><a href="#property-shapes" target="_top" title="#property-shapes" xlink:actuate="onRequest" xlink:href="#property-shapes" xlink:show="new" xlink:title="#property-shapes" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="13" lengthAdjust="spacing" text-decoration="underline" textLength="65" x="280.25" y="355.8351">sh:property</text></a><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacing" textLength="5" x="349.25" y="355.8351">*</text></g><!--link PropertyShape to PropertyGroup--><g id="link_PropertyShape_PropertyGroup"><path codeLine="51" d="M511.5,490.12 C511.5,518.71 511.5,540.73 511.5,561.61 " fill="none" id="PropertyShape-to-PropertyGroup" style="stroke:#181818;stroke-width:1.0;"/><polygon fill="#181818" points="511.5,567.61,515.5,558.61,511.5,562.61,507.5,558.61,511.5,567.61" style="stroke:#181818;stroke-width:1.0;"/><a href="#group" target="_top" title="#group" xlink:actuate="onRequest" xlink:href="#group" xlink:show="new" xlink:title="#group" xlink:type="simple"><text fill="#0000FF" font-family="sans-serif" font-size="13" lengthAdjust="spacing" text-decoration="underline" textLength="50" x="512.5" y="534.2951">sh:group</text></a></g><!--SRC=[hLNTQnGn47-_lsBG1q6wFTItfHJq11Mj5Lj441zosRdTs6oo9Dds3lL_ToRPhwlTynui79t9pc- 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\ No newline at end of file
diff --git a/shacl12-core/images/path-EBNF-rr.svg b/shacl12-core/images/path-EBNF-rr.svg
new file mode 100644
index 00000000..2ed87cca
--- /dev/null
+++ b/shacl12-core/images/path-EBNF-rr.svg
@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="449" height="291">
+   <defs>
+      <style type="text/css">
+    @namespace "http://www.w3.org/2000/svg";
+    .line                 {fill: none; stroke: #332900; stroke-width: 1;}
+    .bold-line            {stroke: #141000; shape-rendering: crispEdges; stroke-width: 2;}
+    .thin-line            {stroke: #1F1800; shape-rendering: crispEdges}
+    .filled               {fill: #332900; stroke: none;}
+    text.terminal         {font-family: Verdana, Sans-serif;
+                            font-size: 12px;
+                            fill: #141000;
+                            font-weight: bold;
+                          }
+    text.nonterminal      {font-family: Verdana, Sans-serif;
+                            font-size: 12px;
+                            fill: #1A1400;
+                            font-weight: normal;
+                          }
+    text.regexp           {font-family: Verdana, Sans-serif;
+                            font-size: 12px;
+                            fill: #1F1800;
+                            font-weight: normal;
+                          }
+    rect, circle, polygon {fill: #332900; stroke: #332900;}
+    rect.terminal         {fill: #FFDB4D; stroke: #332900; stroke-width: 1;}
+    rect.nonterminal      {fill: #FFEC9E; stroke: #332900; stroke-width: 1;}
+    rect.text             {fill: none; stroke: none;}
+    polygon.regexp        {fill: #FFF4C7; stroke: #332900; stroke-width: 1;}
+  </style>
+   </defs>
+   <polygon points="9 51 1 47 1 55"/>
+   <polygon points="17 51 9 47 9 55"/>
+   <rect x="51" y="37" width="26" height="32" rx="10"/>
+   <rect x="49"
+         y="35"
+         width="26"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="59" y="55">(</text>
+   <a xmlns:xlink="http://www.w3.org/1999/xlink"
+      xlink:href="#path"
+      xlink:title="path">
+      <rect x="117" y="3" width="48" height="32"/>
+      <rect x="115" y="1" width="48" height="32" class="nonterminal"/>
+      <text class="nonterminal" x="125" y="21">path</text>
+   </a>
+   <rect x="205" y="37" width="26" height="32" rx="10"/>
+   <rect x="203"
+         y="35"
+         width="26"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="213" y="55">)</text>
+   <a xmlns:xlink="http://www.w3.org/1999/xlink"
+      xlink:href="#predicate"
+      xlink:title="predicate">
+      <rect x="51" y="81" width="80" height="32"/>
+      <rect x="49" y="79" width="80" height="32" class="nonterminal"/>
+      <text class="nonterminal" x="59" y="99">predicate</text>
+   </a>
+   <rect x="51" y="125" width="26" height="32" rx="10"/>
+   <rect x="49"
+         y="123"
+         width="26"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="59" y="143">[</text>
+   <rect x="117" y="125" width="120" height="32" rx="10"/>
+   <rect x="115"
+         y="123"
+         width="120"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="125" y="143">sh:inversePath</text>
+   <rect x="117" y="169" width="144" height="32" rx="10"/>
+   <rect x="115"
+         y="167"
+         width="144"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="125" y="187">sh:alternativePath</text>
+   <rect x="117" y="213" width="150" height="32" rx="10"/>
+   <rect x="115"
+         y="211"
+         width="150"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="125" y="231">sh:zeroOrMorePath</text>
+   <rect x="117" y="257" width="146" height="32" rx="10"/>
+   <rect x="115"
+         y="255"
+         width="146"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="125" y="275">sh:oneOrMorePath</text>
+   <a xmlns:xlink="http://www.w3.org/1999/xlink"
+      xlink:href="#path"
+      xlink:title="path">
+      <rect x="307" y="125" width="48" height="32"/>
+      <rect x="305" y="123" width="48" height="32" class="nonterminal"/>
+      <text class="nonterminal" x="315" y="143">path</text>
+   </a>
+   <rect x="375" y="125" width="26" height="32" rx="10"/>
+   <rect x="373"
+         y="123"
+         width="26"
+         height="32"
+         class="terminal"
+         rx="10"/>
+   <text class="terminal" x="383" y="143">]</text>
+   <path class="line"
+         d="m17 51 h2 m20 0 h10 m26 0 h10 m20 0 h10 m0 0 h58 m-88 0 l20 0 m-1 0 q-9 0 -9 -10 l0 -14 q0 -10 10 -10 m68 34 l20 0 m-20 0 q10 0 10 -10 l0 -14 q0 -10 -10 -10 m-68 0 h10 m48 0 h10 m20 34 h10 m26 0 h10 m0 0 h170 m-390 0 h20 m370 0 h20 m-410 0 q10 0 10 10 m390 0 q0 -10 10 -10 m-400 10 v24 m390 0 v-24 m-390 24 q0 10 10 10 m370 0 q10 0 10 -10 m-380 10 h10 m80 0 h10 m0 0 h270 m-380 -10 v20 m390 0 v-20 m-390 20 v24 m390 0 v-24 m-390 24 q0 10 10 10 m370 0 q10 0 10 -10 m-380 10 h10 m26 0 h10 m20 0 h10 m120 0 h10 m0 0 h30 m-190 0 h20 m170 0 h20 m-210 0 q10 0 10 10 m190 0 q0 -10 10 -10 m-200 10 v24 m190 0 v-24 m-190 24 q0 10 10 10 m170 0 q10 0 10 -10 m-180 10 h10 m144 0 h10 m0 0 h6 m-180 -10 v20 m190 0 v-20 m-190 20 v24 m190 0 v-24 m-190 24 q0 10 10 10 m170 0 q10 0 10 -10 m-180 10 h10 m150 0 h10 m-180 -10 v20 m190 0 v-20 m-190 20 v24 m190 0 v-24 m-190 24 q0 10 10 10 m170 0 q10 0 10 -10 m-180 10 h10 m146 0 h10 m0 0 h4 m20 -132 h10 m48 0 h10 m0 0 h10 m26 0 h10 m23 -88 h-3"/>
+   <polygon points="439 51 447 47 447 55"/>
+   <polygon points="439 51 431 47 431 55"/>
+</svg>
diff --git a/shacl12-core/images/path-EBNF-rr.txt b/shacl12-core/images/path-EBNF-rr.txt
new file mode 100644
index 00000000..9895bd0c
--- /dev/null
+++ b/shacl12-core/images/path-EBNF-rr.txt
@@ -0,0 +1,6 @@
+/* https://www.bottlecaps.de/rr/ui : check SVG, uncheck Embedded */
+
+path ::= predicate | 
+  '(' path* ')' | 
+  '[' ('sh:inversePath'|'sh:alternativePath'|'sh:zeroOrMorePath'|'sh:oneOrMorePath') path ']'
+
diff --git a/shacl12-core/images/path-EBNF.puml b/shacl12-core/images/path-EBNF.puml
new file mode 100644
index 00000000..b594cd5e
--- /dev/null
+++ b/shacl12-core/images/path-EBNF.puml
@@ -0,0 +1,3 @@
+@startEbnf
+path = predicate | "(", {path}-, ")" | "[", ("sh:inversePath"|"sh:alternativePath"|"sh:zeroOrMorePath"|"sh:oneOrMorePath"), path, "]" ;
+@endEbnf
\ No newline at end of file
diff --git a/shacl12-core/images/path-EBNF.svg b/shacl12-core/images/path-EBNF.svg
new file mode 100644
index 00000000..dfe0ba7d
--- /dev/null
+++ b/shacl12-core/images/path-EBNF.svg
@@ -0,0 +1 @@
+<?xml version="1.0" encoding="us-ascii" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentStyleType="text/css" height="292px" preserveAspectRatio="none" style="width:440px;height:292px;background:#FFFFFF;" version="1.1" viewBox="0 0 440 292" width="440px" zoomAndPan="magnify"><defs/><g><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacing" textLength="31" x="10" y="24.5332">path</text><rect fill="#F1F1F1" height="27.6094" rx="5" ry="5" style="stroke:#181818;stroke-width:1.5;" width="69" x="64" y="37.6094"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="59" x="69" y="57.1426">predicate</text><line style="stroke:#181818;stroke-width:1.5;" x1="40" x2="64" y1="51.4141" y2="51.4141"/><line style="stroke:#181818;stroke-width:1.5;" x1="133" x2="395" y1="51.4141" y2="51.4141"/><line style="stroke:#181818;stroke-width:1.5;" x1="64" x2="64" y1="101.0234" y2="101.0234"/><rect fill="none" height="27.6094" style="stroke:#181818;stroke-width:0.5;" width="15" x="64" y="87.2188"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="5" x="69" y="106.752">(</text><line style="stroke:#181818;stroke-width:1.5;" x1="79" x2="99" y1="101.0234" y2="101.0234"/><path d="M107,93.0234 C107,99.0234 109,101.0234 115,101.0234 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="107" x2="107" y1="88.2188" y2="93.0234"/><path d="M107,88.2188 C107,82.2188 109,80.2188 115,80.2188 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="114" x2="152" y1="80.2188" y2="80.2188"/><path d="M134.8,80.2188 L134.8,77.2188 L128.8,80.2188 L134.8,83.2188 L134.8,80.2188 " fill="#181818" style="stroke:#181818;stroke-width:1.5;"/><path d="M159,93.0234 C159,99.0234 157,101.0234 151,101.0234 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="159" x2="159" y1="88.2188" y2="93.0234"/><path d="M151,80.2188 C157,80.2188 159,82.2188 159,88.2188 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="99" x2="114" y1="101.0234" y2="101.0234"/><line style="stroke:#181818;stroke-width:1.5;" x1="152" x2="167" y1="101.0234" y2="101.0234"/><rect fill="#F1F1F1" height="27.6094" rx="5" ry="5" style="stroke:#181818;stroke-width:1.5;" width="38" x="114" y="87.2188"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="28" x="119" y="106.752">path</text><line style="stroke:#181818;stroke-width:1.5;" x1="167" x2="187" y1="101.0234" y2="101.0234"/><rect fill="none" height="27.6094" style="stroke:#181818;stroke-width:0.5;" width="15" x="187" y="87.2188"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="5" x="192" y="106.752">)</text><path d="M52,89.0234 C52,98.0234 55,101.0234 64,101.0234 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="202" x2="371" y1="101.0234" y2="101.0234"/><path d="M284.5,101.0234 L284.5,98.0234 L290.5,101.0234 L284.5,104.0234 L284.5,101.0234 " fill="#181818" style="stroke:#181818;stroke-width:1.5;"/><path d="M383,89.0234 C383,98.0234 380,101.0234 371,101.0234 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="64" x2="64" y1="138.6328" y2="138.6328"/><rect fill="none" height="27.6094" style="stroke:#181818;stroke-width:0.5;" width="14" x="64" y="124.8281"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="4" x="69" y="144.3613">[</text><line style="stroke:#181818;stroke-width:1.5;" x1="78" x2="98" y1="138.6328" y2="138.6328"/><rect fill="none" height="27.6094" style="stroke:#181818;stroke-width:0.5;" width="104" x="122" y="124.8281"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="94" x="127" y="144.3613">sh:inversePath</text><line style="stroke:#181818;stroke-width:1.5;" x1="98" x2="122" y1="138.6328" y2="138.6328"/><line style="stroke:#181818;stroke-width:1.5;" x1="226" x2="279" y1="138.6328" y2="138.6328"/><rect fill="none" height="27.6094" style="stroke:#181818;stroke-width:0.5;" width="124" x="122" y="162.4375"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacing" textLength="114" x="127" y="181.9707">sh:alternativePath</text><path d="M110,164.2422 C110,173.2422 113,176.2422 122,176.2422 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><line style="stroke:#181818;stroke-width:1.5;" x1="246" x2="255" y1="176.2422" y2="176.2422"/><path d="M267,164.2422 C267,173.2422 264,176.2422 255,176.2422 " fill="none" style="stroke:#181818;stroke-width:1.5;"/><rect fill="none" height="27.6094" 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\ No newline at end of file
diff --git a/shacl12-vocabularies/shacl-shacl.ttl b/shacl12-vocabularies/shacl-shacl.ttl
index 31f7e7a5..fc0536f3 100644
--- a/shacl12-vocabularies/shacl-shacl.ttl
+++ b/shacl12-vocabularies/shacl-shacl.ttl
@@ -23,11 +23,11 @@ shsh:
 shsh:ListShape
 	a sh:NodeShape ;
 	rdfs:label "List shape"@en ;
-	rdfs:comment "A shape describing well-formed RDF lists. Currently does not check for non-recursion. This could be expressed using SHACL-SPARQL."@en ;
+	rdfs:comment "A shape describing well-formed RDF lists. Currently does not check for non-recursion (this could be expressed using SHACL-SPARQL)."@en ;
 	rdfs:seeAlso <https://www.w3.org/TR/shacl/#syntax-rule-SHACL-list> ;
 	sh:property [
 		sh:path [ sh:zeroOrMorePath rdf:rest ] ;
-		rdfs:comment "Each list member (including this node) must be have the shape shsh:ListNodeShape."@en ;
+		rdfs:comment "Each list member (including this node) must have the shape shsh:ListNodeShape."@en ;
 		sh:hasValue rdf:nil ;
 		sh:node shsh:ListNodeShape ;
 	] .