Undo, U, Redo, Erase, Oops differences explained

It’s been a while since I posted any beginners’ tips, so here goes. There are several commands in AutoCAD to do with reversing things you’ve done. They are in some cases subtly different and this can confuse newcomers. Here’s what they do: U – reverses the last command you used. Redo – reverses the last U or Undo operation you performed, if that’s the last thing you did. Undo – displays a set of command options that allow greater control over undoing things. (This is rarely used directly by a user, and is more of a programmer’s tool, so I …