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-rw-r--r--src/algebra/sex.spad.pamphlet2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/algebra/sex.spad.pamphlet b/src/algebra/sex.spad.pamphlet
index 52b6d049..2c0a019d 100644
--- a/src/algebra/sex.spad.pamphlet
+++ b/src/algebra/sex.spad.pamphlet
@@ -125,7 +125,7 @@ SExpressionOf(Str, Sym, Int, Flt, Expr): Decl == Body where
eq(b1, b2) == %peq(b1,b2)
null? b == %peq(b,%nil)
- atom? b == ATOM(b)$Lisp
+ atom? b == not pair? b
pair? b == %pair? b
list? b == pair? b or null? b