Some poking around reveals http://git.trinitydesktop.org/cgit/tdelibs/tree/tdecore/README.kiosk which seems to be our equivalent of the source material for that page. It includes some dcop-related discovery instructions.
In addition to the README.kiosk, the file tde/main/applications/kiosktool/kiosktool/kiosk_data.xml defines the actions available in kiosk and a short description of each of them. Search for "action type=" to get a list of the supported actions.
Cheers Michele