-Ap |GV* |gv_fetchpv |const char* name|I32 add|I32 sv_type
-Ap |void |gv_fullname |SV* sv|const GV* gv
-Apmb |void |gv_fullname3 |SV* sv|const GV* gv|const char* prefix
-Ap |void |gv_fullname4 |SV* sv|const GV* gv|const char* prefix|bool keepmain
-Ap |void |gv_init |GV* gv|HV* stash|const char* name \
- |STRLEN len|int multi
-Apd |HV* |gv_stashpv |const char* name|I32 create
-Apd |HV* |gv_stashpvn |const char* name|U32 namelen|I32 create
-Apd |HV* |gv_stashsv |SV* sv|I32 create
-Apd |void |hv_clear |HV* tb
-Ap |void |hv_delayfree_ent|HV* hv|HE* entry
-Apd |SV* |hv_delete |HV* tb|const char* key|I32 klen|I32 flags
-Apd |SV* |hv_delete_ent |HV* tb|SV* key|I32 flags|U32 hash
-Apd |bool |hv_exists |HV* tb|const char* key|I32 klen
-Apd |bool |hv_exists_ent |HV* tb|SV* key|U32 hash
-Apd |SV** |hv_fetch |HV* tb|const char* key|I32 klen|I32 lval
-Apd |HE* |hv_fetch_ent |HV* tb|SV* key|I32 lval|U32 hash
-Ap |void |hv_free_ent |NN HV* hv|HE* entry
+Ap |GV* |gv_fetchpv |NN const char* name|I32 add|I32 sv_type
+Ap |void |gv_fullname |NN SV* sv|NN const GV* gv
+Apmb |void |gv_fullname3 |NN SV* sv|NN const GV* gv|NULLOK const char* prefix
+Ap |void |gv_fullname4 |NN SV* sv|NN const GV* gv|NULLOK const char* prefix|bool keepmain
+Ap |void |gv_init |NN GV* gv|HV* stash|NN const char* name|STRLEN len|int multi
+Apd |HV* |gv_stashpv |NN const char* name|I32 create
+Apd |HV* |gv_stashpvn |NN const char* name|U32 namelen|I32 create
+Apd |HV* |gv_stashsv |NULLOK SV* sv|I32 create
+Apd |void |hv_clear |NULLOK HV* tb
+Ap |void |hv_delayfree_ent|NN HV* hv|NULLOK HE* entry
+Apd |SV* |hv_delete |NULLOK HV* tb|NN const char* key|I32 klen|I32 flags
+Apd |SV* |hv_delete_ent |NULLOK HV* tb|NN SV* key|I32 flags|U32 hash
+ApdR |bool |hv_exists |NULLOK HV* tb|NN const char* key|I32 klen
+ApdR |bool |hv_exists_ent |NULLOK HV* tb|NN SV* key|U32 hash
+Apd |SV** |hv_fetch |NULLOK HV* tb|NN const char* key|I32 klen|I32 lval
+Apd |HE* |hv_fetch_ent |NULLOK HV* tb|NN SV* key|I32 lval|U32 hash
+Ap |void |hv_free_ent |NN HV* hv|NULLOK HE* entryK