
It beats me how or why you would have used  ctrl-click to get help on this 
button.  However (ahem!):  the  Help... button is a menu button.  
When you press it you are offered a  choice of three standard items:

General -- tells you generally what this tool is 

FastKeys -- tells you all the 'magic' keystrokes and clicks that work in this tool 

HowTo -- gives you a quick overview of how the tool is used 

I suggest you start with the General Help.

