(* coercions and the information that [uri] and the composites are coercion *)
val remove_coercion: UriManager.uri -> unit
-(* mh... *)
+(* this is used when resetting, but the more gracefull push/pop can be used to
+ * suspend/resume an execution *)
val remove_all_coercions: unit -> unit
-
+val push: unit -> unit
+val pop: unit -> unit