How to capture bitmaps in Selenium?

Bitmaps are captured using the Selenium set of commands. There are two modes of capturing the bitmaps
1) Capture the bitmap for the entire page - it captures the browser main page area of AUT
2) Capture the bitmap for the screen shots - it captures the entire screen shot like the print scree that you give from your keyboard
Selenium doesn't support bitmap capturing for an element on AUT.