[eterm]

What's a Mm?

Edit: Apparently it's 5000km, Mm seems a bizarre choice of unit given mm exists as something else entirely and km is far more common.

[valarauca1]

Mega is a standard SI-prefix. It is denoted with a capital 'M' as opposed to Milli which is denoted with a 'm' prefix.

I'm just following the standard :|