How to make use of the mu symbol μ in Home View

[Joe Horn]

The micro unit prefix is used like all the other unit prefixes; just stick it in front of (almost) any unit, and Prime will understand that you intend the unit to be divided by 10^6.

The μ character by itself has no other built-in meaning in Prime. It is not a function or system variable or anything like that. If you want to use μ as a variable, just store something into it. Prime lets you do that.