For the custome scripts there are 11.
EventManger.cs
EventListner.cs
and then the next 9 are copies of each other except each points to a different folder

EventManger.cs defines the events that are used to change slides
EventListner.cs is attached to each station listening for when the event is called
EventListner then broadcasts a message to its children telling them to go to the
next or previous slide.

The other 9, matsSizeExample.cs, matsSizeQuiz.cs, matsSizeScale.cs, matsSizeTimeExample.cs, 
matsSizeTimeQuiz.cs, matsSizeTimeScale.cs, matsTimeExample.cs, matsTimeQuiz.cs, and 
matsTimeScale.cs all create an array of the location of the materials to change from their
respective folder

There were also modifications to the VRTK builtin scripts with the major modification to
the builtin controller event manager. That script was changed so that it would invoke the
events created by EventManger.cs.