Activate the journal feature (logging of changes of a property value) for a [[MetaProperty]] of a [[MetaClass]].
=== Turn on journal feature ===
# Connect the MetaClass to the {{CD}} control and switch to the ''[[Class_Details#MetaProperties|MetaProperties View]]''<br/>[[File:UI Classification_02.PNG|220px|border|alt=Classification|Classification]]
# Select the MetaProperty you want to activate the journal feature for
# Enable the checkbox "'''Changelog active" ''' in the details of the [[Relation_Editor#Relation_data|relation data]]<br/>[[File:ChangeLogActive.jpg|220px|border|alt=ChangeLogActive|ChangeLogActive]]
# Save the changes with {{key press|Ctrl|S}} or the save command
=== Turn off ===# Turn off the journal feature by unchecking "'''Changelog active" ''' again.
[[Category:How-To]]