Introduction
There are several things you can do to maximize the space you have in the discussion to write and view posts.

Directions

Collapse the taskbar on the left and make the discussion board full screen.
to do that: click the small gray triangle:
.
Fold up the directions after you've read them
To do that, click the - sign
On the System check screen, make sure your screen resolution is at least 1024X768.
If it's not, go to Control Panel/ Display/settings and change it.
Finally, you can increase the overall space for Angel by removing some toolbars.
To do that go to the View menu on your browse and unclick some items.