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-rw-r--r--language/l2_parse.ott1
1 files changed, 1 insertions, 0 deletions
diff --git a/language/l2_parse.ott b/language/l2_parse.ott
index 74522150..7126b9e0 100644
--- a/language/l2_parse.ott
+++ b/language/l2_parse.ott
@@ -168,6 +168,7 @@ atyp :: 'ATyp_' ::=
| num :: :: constant {{ com constant }}
| atyp1 * atyp2 :: :: times {{ com product }}
| atyp1 + atyp2 :: :: sum {{ com sum }}
+ | atyp1 - atyp2 :: :: minus {{ com subtraction }}
| 2** atyp :: :: exp {{ com exponential }}
| neg atyp :: :: neg {{ com Internal (but not M as I want a datatype constructor) negative nexp }}
| ( atyp ) :: S :: paren {{ icho [[atyp]] }}