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-rw-r--r--src/interp/sys-constants.boot4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/interp/sys-constants.boot b/src/interp/sys-constants.boot
index 98544eb2..f6c9ef10 100644
--- a/src/interp/sys-constants.boot
+++ b/src/interp/sys-constants.boot
@@ -429,6 +429,10 @@ $EmptyMode ==
$OutputForm ==
'(OutputForm)
+++ The InputForm domain form
+$InputForm ==
+ '(InputForm)
+
++ The domain constructor for functional expression
$FunctionalExpression ==
'Expression