[Newbies] Customizing the IDE

Hi, First post to this list.

I'm currently reading the 'Squeak by Example' book with the goal of being able to do some Morphic stuff.

Anyway, I get the impression that everything in the image at my fingertips. So what if I want to add something to one of the context menus, or find out what message gets sent to invoke a menu entry so that I can run it directly in a workspace, or change the order of the objects in one of the flaps, etc.

What are the steps to go about finding out where this stuff is in the image?

Daniel Klein