Grammar
Think of this like a DOS or bash prompt. The first word is a command. Every word after that is an argument to that command. Every command has a different number of required and optional parameters. White space delimits arguments. If you need a space in an argument, put double quotes around the whole thing. If you need double quotes and spaces in an argument, escape the quote with a backslash (\) first. If you need to do a backslash, escape that with a backslash.

It's pretty straight-forward. If you're confused, ask.

Command Reference
Arguments in <angle brackets> are required. Arguments in [brackets] are optional. If there is more than one optional argument, you can't skip one and provide one after it. Once you skip one, you have to skip the rest. "; foreach my $cmdname (sort keys %LJ::Con::cmd) { my $cmd = $LJ::Con::cmd{$cmdname}; next if ($cmd->{'hidden'}); my $args = LJ::ehtml($cmd->{'argsummary'}); my $anchor = "cmd.$cmdname"; $ret .= "