Added parameter checking in several functions.  Not necessarily needed, but it's good for hardening the program.
Added parameter checking in several functions.  Not necessarily needed, but it's good for hardening the program.
destroyer07/editor-on-fire,destroyer07/editor-on-fire,m0j0hn/editor-on-fire,m0j0hn/editor-on-fire,destroyer07/editor-on-fire,m0j0hn/editor-on-fire,m0j0hn/editor-on-fire,destroyer07/editor-on-fire