One of the most common ways to get a foothold in Genera for debugging something is to (1) find a place where the thing you want to use appears visually, (2) click Super-Left to get the object into your hands for read-eval-print, inspection, etc, (3) use (ed (type-of *)) to find its source reliably and with no foreknowledge of what the type is, who wrote the program, what their file conventions were: who loaded it, or any of myriad other things that other systems make me do.
-- Kent M Pitman on comp.lang.lisp