ERROR: Function `PRINC' is undefined.

[Chris]

Working though the book and trying the princ example on the try-lisp page:

CL-USER> (princ "Hello, from Lisp!")
ERROR: Function `PRINC' is undefined.

["the Phoeron" Colin J.E. Lupton]

Please see JSCL issue https://github.com/davazp/jscl/issues/55