The function example-file
returns an absolute path to a file file in the examples
folder of the LispWorks library.
(example-file "capi/applications/othello.lisp")
=>
#P"C:/Program Files/LispWorks/lib/7-0-0-0/examples/capi/applications/othello.lisp"
LispWorks User Guide and Reference Manual - 13 Feb 2015