AuthHosts syntax - Colon needed?

[M. H.]

Hi, I was wondering what the syntax for the AuthHosts setting in the 
registry. I just want to allow connections from two machines. I currently 
have  -:+192.168.0.44:

To add access for an additional machine, what would I add? just a + and the 
additonal address after the first one?      -:+192.168.0.44:+192.168.0.54

or would I need to add the +, the additional address and a colon?
-:+192.168.0.44:+192.168.0.54:

So basically, my question is, do I need to have a colon at the end or not? 
Is the colon only needed when adding additional addresses?

Thanks.

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