As far as I recall, there was no general 'additional information' section. There was a Mitig Cir section and a section titled something very specific like: "Please use this space for additional information about your undergraduate degree". Unless you're referring to one of the questions under "Additional 1 & 2"? In the case of the former, I think that one definitely has to relate to your undergraduate studies, like if you did a year abroad and have different grades, etc. Re the latter, that would depend on your personal circumstances and thus be very tailored to your circumstances.Since the topic of AG has come up, what did people put in the additional information section of the application form?