Uh, the penthouse is the fourth floor not the third floor. I started
making this error about 15 years ago when we moved to the penthouse. Add -t option to kill titles in images; it messes up calculation. Add new -z option to tell it to not do any zoom/pan stuff; just use the cur x,y to draw crosshair. Pass the state file through again, which has now has the bounds of the image. Not using this yet.