Hi Enrico, found the time this evening to integrate your idea that custom help books should be able to define where subbooks should be placed/displayed: #pages ^(firstPage MyAppSubTutorial secondPage thirdPage) Just update your Squeak image to #10565 and you dont need to workaround this problem using a custom builder anymore. It is now also mentioned in the help systems help itself. See chapter "STEP 7 - TIPS AND TRICKS". I've also opened an issue together with the changeset for Pharo 1.2 so that it will be integrated in one of the next pharo updates. http://code.google.com/p/pharo/issues/detail?id=3022 Thanks for the idea and initial code! Bye T. -- Neu: GMX De-Mail - Einfach wie E-Mail, sicher wie ein Brief! Jetzt De-Mail-Adresse reservieren: http://portal.gmx.net/de/go/demail