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-rw-r--r--src/expl_util.sig1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/expl_util.sig b/src/expl_util.sig
index 40ede9a4..2a6c7abe 100644
--- a/src/expl_util.sig
+++ b/src/expl_util.sig
@@ -82,6 +82,7 @@ structure Sgn : sig
datatype binder =
RelC of string * Expl.kind
| NamedC of string * Expl.kind
+ | Sgn of string * Expl.sgn
| Str of string * Expl.sgn
val mapfoldB : {kind : (Expl.kind', 'state, 'abort) Search.mapfolder,