These are the special XML files used to demo Tinderbox from within the program.
Creator: Cere
Type: Tuto
Filename Extension: '.tut' (earlier versions used '.xml')
Icon: White page with the old Tinderbox program symbol and 'TUTORIAL' beneath it.
Correctly labelled tutorial files can be run from any location. Prior to this any tutorial file needed to be in the /tutorials/ sub-folder of the Tinderbox application package.