-val transitions : t -> state -> (label*formula) list
-(** Give the list of labels and formulae from transitions for a given state *)
+val transitions : t -> state -> (label*formula) list * (label*formula) list
+(** Give the list of labels and formulae from queries and recognizing
+ transitions for a given state *)
+
+val transitions_lab : t -> QName.t -> (state*formula) list *(state*formula) list
+(** Give the list of states and formulae from queries and recognizing
+ transitions for a given tag *)
+
+val transitions_st_lab : t -> state -> QName.t -> formula list * formula list
+(** Give the list of formulae from queries and recognizing transitions for a
+ given state and tag *)