Please explain the course numbering code

<p>H for honors is true, but a quick search also turns up honors courses ending with L, M, N, T, and no letter at all. W for Writing Component seems entirely fictional, though – if you go to the Registrar’s web page, click on Find Courses for Spring 2010, and scroll down to Substantial Writing Component, you won’t find a single course with a W in the course number. [Course</a> Schedules | Registrar | University of Texas at Austin](<a href=“http://registrar.utexas.edu/schedules/]Course”>Course Schedules | Office of the Registrar)</p>