Elektron Musical Instruments

I would like to know what do the cc#s correspond to in the midi
machines.  Is there a list somewhere?  Maybe I should look at the
manual yet again.  I have tried controlling my Indigo2 with it but I
can't find the proper cc#.  

I think the Indigo has some letters in the number.  I would love to
have the MD as a second controller to control a second patch in the virus.

Why did they have to pre-define the cc#s?  It confuses me.