Grass Valley Maestro Master Control v.2.4.0 - Manual (Page 362)

MAESTRO — User Manual 358
Visualization Tool
Figure 259. AUX- CH1- Border Settings Applied
Preview Section
The Preview section provides a graphical representation of how the edits
or changes to the keyframes will appear. You can change the shadow and
border settings for both the Program and AUX windows; as well as hide or
view these windows. The colors that identify the Program and AUX
windows can be switched. Aspect ratio can be changed between standard
(4:3) and wide-screen (16:9).