>In the same section, "Form width in pixel" and "Form width in percentage" are used for that setting. Those can also be set from the "Message view setup" which appears on the upper right of a message.

My monitor is set to 1024x768 and my UT settings are below. Which of these is causing my lower frame to scroll horizontally? What do I need to change it to?

Upper frame height in percentage: 15
Font size: 13
Form width in pixel: 1000
Form width in percentage: 100
Height of divider between upper and lower frames: 1
Line height of the lists: 15
Font size in lists: 12