~F8TVFONT'S EXTENDED COMMANDS.


ARCWID
	Set smoothing constant.  This is the maximum distance a vertex 
	may from a arc before it is split into two arcs.  See description
	of smoothing algorithm on page XX.

BABYKILL
	Toggle flag which causes baby polygons (those consisting of only
	one pixel) to be killed)

CAMERA
	Select a different camera number.

CENTER
	Center all images.  It is equivalent to the command 'W' applied
	to each image and uses the same control bits.

DDT
	Invoke DDT if present, return with αP..

DISPLAY
	Enable display.

-DISPLAY
	Disable display.  TVFONT spends a significant amount of time
	putting up the display.

EXIT
	Exit to moniter.

GRID
	Enable display of grid.  Grid is some multiple of pixel size,
	dependent on camera focal length.  It is useful of lining up
	characters.

-GRID
	Disable display of grid.

HELP
	Display help file.

HOLE
	Change a polygon into a hole.

KILARC
	Kill arcs vectors.  This allows several degrees of smoothing to
	be tried in conjunction with the ARCWID command.
~I1973,800;F8- 48 -