Text from the plan file or the above entry box will be examined for
course-name sequences -- three or four capital letters followed by optional
white-space separation and then exactly four adjacent digits. Each such
sequence is saved as a course name (several on a line is okay).
All other input text is ignored, except that the first non-blank line is
used as a title if it does not contain a course name, or as a plan address
if it starts with "http://" and no course names are found.
External Plans: A link like http://foacc.tlok.org/course_costs.php?plan=hunter.ellinger.org/sample.plan can be used to analyse a plan
located on a different website. Post files with the plans you are interested in
on your own website, then make the links by replacing "hunter.ellinger.org/sample.plan"
in the example with the URL of each plan.