The call script is if you have a script that needs turing on or off. You can also use it to tell the scripts you are using about the event. Some scripts even allow you to use the comment function. I'm trying to make an ABS using the comments to tell the game that it has X hp X defense X attack X sight range.... I think I do remember an old savespot script... But I do actaully believe if you used call script to turn saving off, then turn it on in certain squares, it could work. No need for a CMS for this though, the save option would just be greyed out.