All parts of a DWT will be editable. But only in the DWT, not in the child
pages that are spawned from that DWT. If this doesn't make sense to you,
then please spend some time in HELP reading about using Templates before you
get into real trouble! 8)
And by the way - non-editable regions are determined by negative inference.
This means that in any template-based page, only the editable regions are in
fact editable, and all other regions are non-editable.