Just read the thread about "Alt" SEO.

How do you add an Alt tag to a text area?
Whe I right click the text area I have tabs:
Link, mouse over , placeholder and Image Which I all believe to be associated with teh object - true?

(Page, Website and Publish I believe have nothing to do with the object - true?)

So, do I put html in Image Caption (Alt text)?
If so, should I put all key works that are contained in the text into this box?