1. yes:
http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=352488&Searchpage=1&Main=42934&Words=%22mouse+gestures%22&Search=true#Post352488

2. no, you can do it with c_move

3. seems like a collision problem. Include default.c and hit f11 twice to see if the bounding box is big enough. Take a look in the manual for "c_setminmax".