Hi Alexander I think google are saying they are reserved as guide so you don't clash with some service of theirs, however I don't actually see any way of preventing you from using any of these paths in urls if you handling them yourself.
In my case I don't use webapp and don't only map a few of the _ah paths, and so my default handler gets all forms of /form as well as /_ah/* that don't match existing mapped handlers in app.yaml. The danger is you prevent the access of some useful appengine service. Rgds Tim -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/fHWlZdbSmLUJ. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.