I just found it. Finally. There was a "+6" at the bottom of the screen.
Midi caused electrons to hula in cyberspace with: >Overnight the font for all messages viewed in the view pane or opened is >a very large size and I cannot find any place to reduce the size. When I >write a new message or respond to a message, the font is just fine. But >if I look at the message in the out tray after it is sent, it is big like >everything else. > > >Where is the font size hidden? > > >

