Yeah it's actually what the WOR file uses to create the map when you open a workspace.
Hans and I just played around with it a bit, and it seems that it’s possible to anything with the map window that you normally can without the hide keyword.
Example for the situation of creating an entire map (of two layers) and saving a picture of it, without the user ever noticing anything.
Map From BYPOLYGON, VEJMIDTE hide
Set Map
Window WindowID(0)
CoordSys Earth Projection 8, 115, "m", 9, 0, 0.9996, 500000, 0
Center (556000,6322000)
Zoom 39494.26415 Units "m"
Save Window WindowID(0) As "C:\Users\Jonathan\Desktop\Untitled3.BMP" Type "BMP" Width 32.6496 Units "cm" Height 19.5262 Units "cm" Resolution 96
close Window WindowID(0)