The question appears identical to that taken directly from a homework
assignment. The part about compound means a second application is
involved, so what application is it? The text that the question comes
from will answer the question, hence the advise to complete the reading
assignment.


Shanell wrote:

If I knew where to read I wouldn't be submitting this question, because I
would have been able to READ it!

"Bob I" wrote:


Have you completed the reading assignment yet? I suggest that's where
you start.

Shanell wrote:


What is a compound document, and why is it needed?