When I draw a line, I have the autocad-like input boxes near the cursor. That is ok. BUT....When I enter a distance and angle, the distance box must be locked in order to get the correct line length. I am sure there is some simple something I am overlooking, because that locking feature every time I draw a line is tedious. On the other hand, when I pull a line after the previous line as been drawn, I have to unlock the distance feature. What am I overlooking?