Changes
# [[Create_a_new_MetaClass|Create]] a new [[Document]] [[MetaClass]] derived from the System MetaClass [[FILEDOCUMENT]]
# Implement the '''FILETYPE''' property as required, by adding an existing or after creating a new [[MetaPropertiesMetaProperty]] of type [[MetaProperty#Text|Text]]
# Navigate to the [[MetaClass]] [[SYSCLS_EDITABLEDOCUMENT]] in the ''[[Class Browser]]''<br/>[[File:UI_Document_editable_01.png|330 px|border|alt=Property editable|Property editable]]
# Open a [[RelationEditor]] for the created Document class, put the ''SYSCLS_EDITABLEDOCUMENT'' via dragging and dropping in the ''[[Relation Editor]]'' and navigate to the ''Classification''<br/>[[File:UI_Document_editable_02.png|330 px|border|alt=Property editable|Property editable]]
