(stereowin CAM-ID [no|horizontal|vertical|colored] [gapsize])Configure CAM-ID as a stereo window.
no: entire window is a single pane, stereo disabled
horizontal: split left/right: left is stereo eye#0, right is #1.
vertical: split top/bottom: bottom is eye#0, top is #1.
colored: panes overlap, red is stereo eye#0, cyan is #1.
A gap of gapsize pixels is left between subwindows;
if omitted, subwindows are adjacent.
If both layout and gapsize are omitted, e.g. (stereowin CAM-ID),
returns current settings as a (stereowin …) command list.
This command doesn’t set stereo projection; use merge camera or
camera to set the stereyes transforms, and merge window or
window to set the pixel aspect ratio & window position if needed.