Graphical Modeling Framework Runtime - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 447

This element describes the qualities of the container model element for which
this edit helper advice is relevant.
<!ELEMENT eContainmentFeature EMPTY>
<!ATTLIST eContainmentFeature
qname CDATA #REQUIRED>
This element specifies the containment feature for model elements for which
this EditHelper advice is relevant.
qname —The name of the containment feature, qualified by its EClass
name.
<!ELEMENT param EMPTY>
<!ATTLIST param
name CDATA #REQUIRED
value CDATA #REQUIRED>
This element defines a custom parameter name and value pair.
name —The parameter name.
value —The parameter value.
Examples:
<metamodel nsURI="http://www.eclipse.org/emf/2002/Ecore">
<metamodelType
id="org.eclipse.gmf.runtime.emf.type.core.eobject"
icon="icons/eobject.gif"
name="%EObject"
eclass="EObject"
edithelper="org.eclipse.gmf.runtime.emf.type.core.
EObjectEditHelper">
</metamodelType>
<specializationType
id="org.eclipse.gmf.runtime.emf.type.core.special"
icon="icons/special.gif"
name="%Special"
edithelperadvice="org.eclipse.gmf.runtime.emf.type.core.
SpecialEditHelperAdvice">
<specializes
id="org.eclipse.gmf.runtime.emf.type.core.eobject"/>
<matcher
class="org.eclipse.gmf.runtime.emf.type.core.
specialMatcher"/>
</specializationType>
<specializationType
id="org.eclipse.gmf.runtime.emf.type.core.special2"
icon="icons/special2.gif"
name="%Special2"