Note that the node that was asserted about CSE 115
now has a SNePSUL variable, cse115, assigned to it. So we can always
access that node using the SNePSUL variable cse115.
To access it, prefix it with an asterisk
E.g., to say that CSE 115 is a prerequisite for CSE 116 without having to
know which node represents CSE 115,
(describe (assert department CSE division undergrad number 116
name "Introduction to Computer Science for Majors II"
credits 4 prerequisites *cse115) = cse116)