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
(UM§2.9): *cse115.
E.g., to say that CSE 115 is a prerequisite for CSE 116 without having to
know which node represents CSE 115,
evaluate:
(describe (assert department CSE division undergrad number 116
name "Introduction to Computer Science for Majors II"
credits 4 prerequisites *cse115) = cse116)
