?mk_fresh_name_callback:ProofEngineTypes.mk_fresh_name_type ->
?user_types:(UriManager.uri * int) list ->
?what:string -> dbd:HMysql.dbd -> ProofEngineTypes.tactic
?mk_fresh_name_callback:ProofEngineTypes.mk_fresh_name_type ->
?user_types:(UriManager.uri * int) list ->
?what:string -> dbd:HMysql.dbd -> ProofEngineTypes.tactic