1 files changed, 2 insertions, 0 deletions
diff --git a/action.h b/action.h
index 421adea..acfbc05 100644
--- a/action.h
+++ b/action.h
@@ -13,6 +13,8 @@ class Action : public QObject
 public:
 	explicit Action(Board *board);
 
+	virtual bool isSupersetOf(Action *action) const = 0;
+
 signals:
 	void finished(Action *self);
 	void error(Action *self, const QString& messsage);