undeclared variables

[sdobbs@trivia.coginst.uwf.edu (Steve Dobbs)]

This may seem like a dumb question, so please forgive me.  in the following
piece of code, why am I getting the undeclared free variable warnings?

? (setq x t)
T
? (setq y t)
T
? (setq z nil)
NIL
? (and x (or z y))
;Compiler warnings :
;   Undeclared free variable Z, in an anonymous lambda form.
;   Undeclared free variable Y, in an anonymous lambda form.
T
? 


Steven Dobbs
sdobbs@ai.uwf.edu
Institute For Human and Machine Cognition
University of West Florida
Pensacola, Florida

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