void sethostcachemasknumber(float mask, float fld, float num, float op) = #617;
void resorthostcache(void) = #618;
void sethostcachesort(float fld, float descending) = #619;
-void refreshhostcache(void) = #620;
+void refreshhostcache(...) = #620; // optional boolean argument "clear_list"
float gethostcachenumber(float fld, float hostnr) = #621;
float gethostcacheindexforkey(string key) = #622;
void addwantedhostcachekey(string key) = #623;