--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc-src/Tutorial/Ifexpr/value	Wed Aug 26 17:27:27 1998 +0200
@@ -0,0 +1,6 @@
+consts value :: boolex => (nat => bool) => bool
+primrec
+"value (Const b) env = b"
+"value (Var x)   env = env x"
+"value (Neg b)   env = (~ value b env)"
+"value (And b c) env = (value b env & value c env)"