Forum:What is this function?

So I've come accross a few fuctions that I can get my head around them and I can't find them by googling.

Title:: and

and Gender::

What does the double colon in general mean?

thanks in advance

Dem0n Hunter 09:32, April 20, 2012 (UTC)
 * Those are used in templates. For example, if [[File:]] is included in a template, then it means that you can insert to insert a picture &mdash;  S a m   Wang  09:50, April 20, 2012 (UTC)


 * No no I mean the double colon part. Sorry if it was vague but I asked at the end. and do you know what is? I googled and it didn't find anything Dem0n Hunter 09:56, April 20, 2012 (UTC)