AutoCAD Commands Explanations 
Absolute Coordinates
ARRAY
CENTER MARK
COPY
CYLINDER

Drawing Limits
GRID
EXTRUDE

HIDE
INSERT
LAYER

Line Scale (LTSCALE)
Line Types
MOVE

MVSETUP
Object Snaps (OSNAP)
OFFSET
PEDIT
Polyline (PLINE)
Relative Rectangular Coordinates
Relative Polar Coordinates
RENDER
REVOLVE

SOLDRAW
SOLVIEW
STRETCH
SUBTRACT
TRIM

UNION

User Coordinate System (UCS)
VIEW POINT
VPLAYER
ZOOM XP