The output format for planner, both to database and to file, has a bad
problem. It supports an id="" attribute for all items in the file, and
uses this to cross-reference - fine. However, planner generates these
ID's as integers numbered-from-1 every time the plan is output.

This means that it is impossible to do concurrent work on a plan!

If the plan is kept under a source-code-management system, the ID
numbers make it impossible to merge plans. Likewise in databases.

The in-program datastructures don't make use of the ID.

If the ID were a string, generated like "<username>-<host>-<datestamp>",
which was GQuarked on load/save of the file, then it would be possible
to store the plans sensibly under CVS, which would make this program
useful.

cheers, Rich.