Hand Tool lets to move and work on different portions of a "Stage Window". For larger flash movie, this tool is very handy to use. The Zoom Tool is used to "enlarge" or "minimize" an image size.
Video Tutorial:
Zoom Tool:
The above video teaches the uses of the "Hand" and "Zoom" Tools.
In the video we have used the "Hand Tool" to move around a "Stage Window".
Next select the "Zoom Tool" from the "Tool Bar".
Two icons will appear on the bottom of the "Tool Bar" - one to minimize and the other to maximize size of an image.