Diagram Of The Parts Of A Sunfish Sailboat How Can I Whiteout Certain Parts Of A Diagram In Microsoft Word 2003?

How can I whiteout certain parts of a diagram in microsoft word 2003? - diagram of the parts of a sunfish sailboat

I covered my book, several shots of the anatomy and physiology of the muscles. Whiteout I have muscles that do not need to know, but I do not know how.

When I click on the chart, is a big thing, the text box with the corners. What can I do in the white part of the picture?