Thanks for pointing that out - we'll update all links/resources over time but haven't completed that yet. In general the community preferred "MARS" over "MRS" and as three letter abbreviations are not a must anymore MARS with its four characters makes it easier to find. Eventually on Mars, in 2025, it will simply be known as the crypto of Mars  . Smaller units might get great names like "1 zubrin" or "10 bas" :-)