I suggest to either have 2 new procedure names like:
`#(rgb,1024,2048,1)ui('RscDisplayEmpty')` - stretch (current)
`#(rgb,1024,2048,1)uicut('RscDisplayEmpty')` - cut off
`#(rgb,1024,2048,1)uifit('RscDisplayEmpty')` - shink to fit
or add a new parameter after `texType`:
`#(rgb,1024,2048,1)uifit('RscDisplayEmpty','uniqueName','ca','cut')`