I am new to Hong Kong, but have just gotten my HK ID card.

I read on the gov.hk site about the "easy travel scheme". It says:
"Under the Easy Travel Scheme, holders of Hong Kong identity cards bearing "***", "*" or "R" symbol or locally issued Hong Kong permanent identity cards, who are aged 11 or above, can travel from Hong Kong to the Mainland and Macao SAR and vice versa without producing an HKSAR Re-entry Permit or other travel documents at any Hong Kong immigration control point. They are also not required to fill in any arrival card or departure card."

First of all, I am not exactly sure what kind of ID i have, but it does start with an "R" (if that helps). Does this mean that I do not need to apply for a re-entry permit? I am unclear as to what to do and it seems that the different govt agencies that i have called are just passing me around. If I do need to apply for a re-entry permit, what documents do i need to provide?