ALL AutoCAD Commands

RAY Creates a semi-infinite line
RECOVER Repairs a damaged drawing
RECTANG Draws a rectangular polyline
REDEFINE Restores AutoCAD internal commands overridden by UNDEFINE
REDO Reverses the effects of the previous UNDO or U command

REDRAW Refreshes the display in the current viewport
REDRAWALL Refreshes the display in all viewports
REFCLOSE Saves back or discards changes made during in-place editing of a reference (an xref or a block)
REFEDIT Selects a reference for editing
REFSET Adds or removes objects from a working set during in-place editing of a reference (an xref or a block)
REGEN Regenerates the drawing and refreshes the current viewport
REGENALL Regenerates the drawing and refreshes all viewports
REGENAUTO Controls automatic regeneration of a drawing
REGION Creates a region object from a selection set of existing objects
REINIT Reinitializes the digitizer, digitizer input/output port, and program parameters file
RENAME Changes the names of objects
RENDER Creates a photorealistic or realistically shaded image of a three-dimensional wireframe or solid model
RENDSCR Redisplays the last rendering created with the RENDER command
REPLAY Displays a BMP, TGA, or TIFF image
RESUME Continues an interrupted script
REVOLVE Creates solids by revolving two-dimensional objects about an axis
REVSURF Creates a revolved surface about a selected axis
RMAT Manages rendering materials
ROTATE Moves objects about a base point
ROTATE3D Moves objects about a three-dimensional axis
RPREF Sets rendering preferences
RSCRIPT Creates a script that repeats continuously
RULESURF Creates a ruled surface between two curves