VIEWSONIC ND5000 - Manual (Page 27)

ViewSonic ND4200/ND5000 23
Transparency
To change the transparency of the browser on-screen in relation to the video image in
the background, click Actions > Transparency. The screen shown below appears.
1 In the Transparency between OSD and video layer field, type a number
between 0 to 255 for a more or less transparent (translucent) browser image
(user interface) so you can still see through the browser OSD (On-Screen
Display) shown below on the right with your video or other images: 0 = no
OSD, 255 = no video, 128 = equal transparency between video and OSD
layers.
2 To apply the entered transparency value to the image on the NMP-500, click Apply.
OSD very transparent
OSD not transparent