Customizing the metamodel > What you can do with USRPROPS/SAPROPS > Layout capabilities > Pages in tabs
  
Pages in tabs
Pages are automatically added to tabs when the properties of a chapter exceed the room necessary for them to be laid out on a single page. The properties are placed onto a second or subsequent page. Page navigation arrows are added to the upper-left corner of the tab.
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Groups are treated as a single item. If a group cannot be put in the framework of a tab in its entirety, it is put on a new page.
See also
Layout capabilities