Pot question

[Haible Juergen]

	>Quick one: I have bunch of pots labelled "20KD", I know A is lin,
	>B is log, but what is D? (is there C?)

Sometimes A is lin, but mostly nowadays A is log. ("Audio taper")
Sometimes B is log, but mostly B is lin.
C is reverse log (as needed for Minimoog resonance and 
SSM2017 gain pot)

I don't know what D is.

JH.