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-rw-r--r--src/iflow.sig2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/iflow.sig b/src/iflow.sig
index 2bdc9aae..2ef8be5f 100644
--- a/src/iflow.sig
+++ b/src/iflow.sig
@@ -55,4 +55,6 @@ signature IFLOW = sig
val check : Mono.file -> unit
+ val debug : bool ref
+
end