Are indexterm ranges backwards incompatible?

[Dana Spradley <dana.spradley@oracle.com>]

After this morning's meeting, I'm starting to think that maybe ranged indexterm should be considered backwards incompatible with DITA 1.0.

In 1.0, it is ambiguous whether indexterms point to discussions confined to a single page, or to extended discussions that begin on a certain page.

Introducing ranged indexterms removes that ambiguity.

Users who want to make use of ranged indexterms would need to go back through their entire document set and replace current point indexterms with ranged indexterms where appropriate - otherwise any new ranged indexterms they add would cause these old point indexterms to be misinterpreted.

Doesn't that amount to backwards incompatibility?

--Dana