what is the purpose of #: (hashtag/pound colon) in bash
<p>I was recently looking at the Homebrew source code. Since it's a popular tool, the code is probably relatively clean. I noticed they use a <code>#:</code> comment style (example: <a href="https://github.com/Homebrew/brew/blob/master/Library/Homebrew/cmd/update.sh" rel="nofollow">update.sh</a>). I haven't seen that anywhere else (and it's hard to search for symbols, so I can't find any mentions of it). Is that an accepted convention? Does it have a special meaning?</p>