Comment 10 for bug 707064

See (not 100% complete) "attribute hook" work here:

http://repo.or.cz/w/geda-gaf/pcjc2.git/commitdiff/2156a7294a1aeaf4b97f6d6d5e7da3d584acd296
and
http://repo.or.cz/w/geda-gaf/pcjc2.git/commitdiff/308016b93bba3882f67c228cfd42acf6a7e9740a

NB: These URLs will be out of date if / when I push any changes to my stgit branch, sorry.

They live in this branch:

http://repo.or.cz/w/geda-gaf/pcjc2.git/shortlog/refs/heads/local_customisation

And are titled:

"Attribute change hooks"
and
"Perform slot updates based on attribute changed hooks"