Continued Lists

I got a question in regard of the @text:continue-list attribute:

http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#attribute-text_continue-list

    

    It is obvious that this attribute connects two (or more) lists
    elements within a document, where the following list has the
    @text:continue-list attribute referencing to the previous list. 

    From my understanding those lists are not equal to one list, which
    embeds all the in between content, because:

    
      
The ODF 1.2 schema only allows paragraphs, headings, soft-page
        breaks and (nested) lists within a list. The in between content
        may be arbitrary.

      

      
The usual indent of list content is likely not to apply to the
        in between content (unspecified - what is the user expectation?)

      

    
    
What puzzles me, is the spec is not precise in regard of

    

    
      
@text:continue-list only allowing an xml:id of a list, that
        has the same nested/indent level as the referenced list

      
What happens if one of both list's list item are
        increased/decreased in list level?

    
    
Can someone remember the use case for this feature and/or
      reference to the discussion?

      Does this feature exists as well in other formats?

    

    
Thanks in advance,

      Svante