My question was not particularly for "+i" mode,it was about all modes.Ok,i'll give you example.In channel #Linux on freenode.net mode is "+mtincPf".But when i click in the channel(in mIRC) to see the channel info only "only ops set topic" and "no external messages" checkbox-es are checked.Why?Ok,there are some special modes on the different servers,but i want to know which of them are universal,for all networks.There is nothing about this topic in the RFC 2812,just explanation on some modes,but not for all of them.