LJ::help_icon — Returns BML to show a help link/icon given a help topic, or nothing if the site hasn't defined a URL for that topic. Optional arguments include HTML/BML to place before and after the link/icon, should it be returned.
LJ::help_icon(topic, pre, post);
topic. Help topic key. See doc/ljconfig.pl.txt for examples.
pre. HTML/BML to place before the help icon.
post. HTML/BML to place after the help icon.