In the past it was possible for a ODF 1.0 or 1.1 consumer to make sense
out of a ODF 1.2 file by handling unknown elements like foreign
elements. I strongly believe that this property should be retained
within ODF 1.x. Unfortunately GCT makes this impossible, considering the
following example from the GCT proposal (6.12.2):
<text:p>
How text is deleted
<delta:removed-content delta:removal-change-idref=”ct2”>
or
<text:span text:style=”bold”> removed</text:span>
like this
</delta:removed-content>
from a paragraph.
</text:p>
An application considering delta:removed-content a foreign element would
show:
How text is deleted or removed like this from a paragraph.
rather than
How text is deleted from a paragraph.
Andreas
