Pager and Tasklist

[aMovieMan]

Hi

I've been playing around with Ubuntu Application Development for a while, and have often noticed that the system has two lists of windows/applications - tasklist and pager. This has not bothered me until now but I wanted to find out - what is the difference between the two? Do they refer to applications or windows? Do they include all workspaces or just the current one? Under what circumstances would a window be listed in one but not the other?

Thanks.