Hi Michael, thanks so much for this information. I'm able to place points in arbitrary locations using the keyboard as you suggest (I'm already familiar with most of the other special inputs like radius, as they come up when that command is used). It's a little awkward as I have to write down the coordinates while moving the cursor into 2 or 3 views to get all the right numbers, but it works. I will re-read the intro because clearly I missed some stuff before!

Rachel