Grass Valley Kaleido-Solo Installation v.5.00 - Manual (Page 73)

GUIDE TO INSTALLATION AND OPERATION
Kaleido-Solo | 69
Mask
The area of the image that is outside the protected area as shown by the markers can be masked, and the mask
selected as transparent or opaque, using this menu.
Off No mask applied.
Opaque Mask is applied and completely blocks video.
Transparent Mask is applied and video can be seen through mask.
The 4:3 line or mask will appear only when the active output resolution is 16:9 (e.g.: 1920x1080p60). For this
behavior the 4:3 line/4:3 mask must not be set to off.