ItemEditorPart
The ItemeditorPart element can be found on the More Info pages and represents the part marked “Entered / Modified on, by”:

In the supplied page configuration, this is simply used as an element:
<ItemEditorPart Name=”Editor” />
The code behind it is as follows:
<Group Orientation=”Vertical”>
<Group Name=”EnteredGroup”>
<TextBlock Label=”{Translate 'Entered on’}” ValueExpression=”creationdatetime” ShowLabel=”True” Converter=”DateTime” />
<TextBlock Label=”{Translate 'By’}” ValueExpression=”creator” ShowLabel=”True” />
</Group>
<Group Name=”ChangedGroup”>
<TextBlock Label=”{Translate 'Changed on’}” ValueExpression=”modifieddatetime” ShowLabel=”True” Converter=”DateTime” />
<TextBlock Label=”{Translate 'By’}” ValueExpression=”modifier” ShowLabel=”True” />
</Group>
</Group>