Practice With Hooks:
 

I would like to start a thread where people can learn hooks by small examples:

The way I see it, a hook can be placed somewhere to call a function from a place it's not normally called from. I'm, sure other people see it differently....

But with help from a few of you coders, I think we can get everyone on the same page by providing a few basic hook examples with footnotes describing what happened in the code.

Now if you may,
Hook us up. :)