The interpretation of TAB characters is (almost) entirely unpredictable - therefore (almost) all code posted here (and on other forums) using TABs for layout will be garbled.
See, for example, http://www.keil.com/forum/docs/thread15056.asp
Surely, it should be possible for the forum to detect TAB characters in the post and prompt the user for the required TAB expansion?
Thanks for the thread suggestion. It will nearly solve the problem to do the hanging indent in docs. Well, I think the copy-paste will also work in this condition. Thank you very much.