Anyone like to explain about the GtkType enums?

I'm not objecting - at least they're actually enums (which GtkStock is not!) - I'm just interested because they don't exist in that form in GTK+, although the same basic idea does... and is deprecated... Changing the names of enums means that any link to them using <enumname> and the name that's actually given in the source code means the link no longer works. I'm not sure yet whether this was a manual change or whether it came from the auto-update script. Can someone look into it please? (Reverting manually for now.) - Steph