Objective Question & Answer

In AutoCAD, typing REC (or RECTANG) and pressing Enter or Spacebar activates the

rectangle command.

Here is what happens with the other options:

R: This is the shortcut alias for the REDRAW command, which refreshes the current viewport

screen display.

RE: This is the shortcut alias for the REGEN (Regenerate) command, which regenerates the

entire

drawing from the drawing database to fix pixelated circles or curves.

RET: This is not a valid standard AutoCAD shortcut command.