I made reference to this in the previous posts “option 2” solution. A way to stop many editing actions at the exact point you want is to use the space bar.
Adding or adjusting a line can be tricky right now in PowerPoint 2007. Because some mice tend to be a bit jumpy when you release the click the line has moved a bit from your ideal location.
What you can do is click and drag to the length you want (can be longer or shorter). Then press the space bar. Using the space bar is the same as releasing, or unclicking.
Also works with adjusting images or autoshapes size, including using the crop tool.
It is bit difficult to figure this action out without doing it. Open PowerPoint 2007 and try using the space bar instead of unclicking.
– Troy @ TLC