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[Subject] refers to the course subject (i.e. AERO, PETE, etc.).
Class
The Classdirectory is where students go to access course materials that the instructors and TAs wish to share.
Instructors and TA's are able to write to this directory, students are able to read it.
Instructor
The Instructor directory is a private area for instructors to prepare course materials.
Instructors are able to write to this directory, no one else can read or write to it.
Teaching_Assistant
The Teaching_Assistant directory is a private area for TAs and instructors to jointly prepare course materials.
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