This is a pretty specific macro that I use for doing Copy/Paste/Save As but if it helps someone else great!
I take multiple parts from a single drawing and separate them out into individual dwgs for the purpose of CNC machining. So for instance one drawing might have 100+ parts in it. I will Ctrl+C the part and then switch to my other drawing that has a single part in it and run my macro which erases all the geometry in the model space, pastes in the part I've got on my clip board and inserts it at 0,0. Does a zoom extent and prompts me to "Save As" all in one fell swoop.
The best way to understand it is try it. Like I said though it's kinda specific and weird but other people might be doing something similar, or it might at least give you an idea of some similar process you are doing thats a pain in the butt.
^C^Cerase all ;_pasteclip 0,0;_zoom e _saveas
I put it on my default shortcut menu for easy right-click action.