Capacitance power prefixes on RF schematics

I see a lot of RF schematics with capacitors that don't specify units or SI prefixes.
For instance, a capacitor may simply say "0.01".
Is this generally its value in microfarads?
i.e. 0.01 = 0.01uF = 10nF?

Or is that assuming too much? Does it simply require you to take a logical guess?

Yes, 0.01 = 0.01uF = 10nF, and also very often used is: 0.1 = 0.1uF = 100nF

Some RF schematics use just a number for low value capacitors as: 2.2 for 2.2pF, or 4.7 for 4.7pF