hi, i finished my test this afternoon, passed. the interview went well and i was told within 3-5 months the oath letter will arrive. just one question to ask you guys here. During the interview, the officer went through my passport and checked off the correspondent entry or exit date on my residence caculator. For some of them, she checked 'I', some 'R', and some just a check mark. Did anybody know what this means? thank you!