This is per the Occidental College Website I read the article. I'm not sure I understand the significance. What about it, exactly, do you find so insightful?
Quote:
It was at Occidental where he stopped being called “Barry” and became Barack Obama, Newsweek pointed out in its account of Obama’s formative years that featured his black-and-white freshman photo on the cover. “It was when I made a conscious decision: I want to grow up,” he told the magazine.
At this time he was 20-21 years old. It indicates that previously, he had always been called Barry, not Barak
His School Record lists him as Barry Soetoro. So it was at this point in his life that he changed his name. He went to Indonesia and Pakistan before he started at Columbia, and it is not a stretch (Since he never had a US Passport until becoming a Senator for Illinois), that he retained a student visa and passport from Indonesia when he travelled.