Just like it says.
I don't understand.
patate12: for translation, some strings can be annotated with extra bits of information in comments; there's a specific syntax to denote that a comment was added automatically (hence "automatic comment").
So, what this ticket is saying is that the ISO code is useful for translation (in addition to the country, language, or script name itself, of course) and should be made available to translators; an automatic comment is just the appropriate place to put that information.
(this ticket was actually not reported by me, but rather v6lur, while he was translating and wanted this; I'm just the one who opened it on Jira)
Changing the reporter to be accurate; I just opened the ticket, v6lur is who actually reported it!