pike internals documentation?

hi,

i just noticed that for some reason the chapter on pike internals which can be found in an old version of the pike manual is not there anymore in the current version:

http://fredrik.hubbe.net/pike/tutorial/tutorial_split_17.html

i think there are more useful sections in that old manual that are not in the current one. i noticed this one because of people repeatedly looking for documentation on the master, and that seems to be the only place where that documentation seems to still exist.

anyone know why this has been dropped? intentional (because it's maybe outdated)? or by accident (lost during restructuring of sections)? or is it simply waiting to be converted to the new doc format?

greetings, martin.