While we learning or translating some certain part of pāḷi text, we need to write down something, EX: translation, class note, commentaries, etc. we need to mark two properties of these appended text - language & type this we call channel.
By the channel function, we can realize the multi-language and multi-type, EX:
These channels will be display in such way:
name-language@nickname
grammatical translation-en@Bhikkhu Kosalla
There must be some other usage to be developed by the smart users like you.