As an architecture student i use autocad A LOT, and i use some commands way more often than others. My mouse (Razer Orochi) has 4 additional buttons, which i thought i could assign to type out commands (macros) in autocad - I'd push a button on the mouse and it would type out "L + I + N + E + Enter". I have them set up with shortcuts now (undo, redo...), but the software i use now (BetterTouchTool) does not allow macros. What free software could I use for this? 