Visibility Assistant

A simple script to facilitate setting visibilty keys on individual objects, or collections of objects. There's a few pieces of interest about the the code - the script uses a mapped function, something that is usually overlooked in maxscript but is very useful. There is also a custom trackbar filter to only show visibilty keys. Finally, it is boxed into a struct which is a nice neat way of packaging the whole UI and methods into a single variable.