CAD	CADian	CADian Global
CAL	CAMERA	Cartesian coordinates
center line	center mark	Center Snap
CHAMFER	CHANGE	CheckStandards
cheia USB	chord	CHPROP
ChSpace	CIRCLE	circumference
CLEANSCREENOFF	CLEANSCREENON	Clear Entity Snaps
clipboard	CLOSE	CLOSEALL
closed	CMDBAR	COLOR
color-dependent	comma-delimited	command bar
COMMANDLINE	COMMANDLINEHIDE	COMPILE
Cone	contiguous	continued dimension
control point	CONVERT	CONVERTCTB
CONVERTOLDLIGHTS	CONVERTOLDMATERIALS	CONVERTOSOLID
CONVERTOSURFACE	CONVERTPSTYLES	CONVERTSTYLE
Coons patch	Coons Surface	coordinate filter
coordinate system	coordinates	coplanar
COPY	COPYBASE	COPYCLIP
COPYEDATA	COPYHIST	COPYLINK
COPYTOLAYER	crosshairs	crosshatch
crossing circle	crossing polygon	crossing window
csv	CTB	cube
CUI	CUIEXPORT	CUIIMPORT
CUILOAD	CUIUNLOAD	cursor
curve	CUSTOMIZE	CUTCLIP
CYLINDER	cylindrical coordinates