The help tool contents (help documents) are stored in jar files in shared/lib. If someone wants to modify the contents of these they have to either repackage the jars or rebuild the tools help files. It would be nice if the help tool would check for modifications to individual files from a local path something like:
ServerConfigurationService.getSakaiHomePath() + "/help/"+help.location
Ideally a new registration could also be provided here would could override all of it, but this would satisfy a lot of customization that we have that are just minor text changes without actually adding/removing help documents.