manpages and help output references multiple things that are not named consistently and often include spaces that are non-trivial to properly format in the manpages. these should be unified.

+ when referencing a file, always reference just "file" (not config-file or inputfile);
+ when referencing a host, always reference just "host" (not "host IP or...", not "server" etc);
+ when referencing an item key, reference just "key"
+ when referencing a port number, reference just "port"
+ when referencing ip address, reference - just "IP" or just "address" ?
+ "node", "ID" or "nodeid" ?

what about a "host" which is host name in zabbix config ?