Multiple spellings of names for Voicemail/Directory

How do you configure voicemail.conf to allow for one voicemail box to accept multiple spellings of the name? I came across a method once but didn’t bookmark it.

I actually found the reference this today:
In voicemai.conf use the same extension, d for the password, followed by the alternate spelling etc.
200 => 1234, john doe,jdoe@localhost
200 => d, jon doe,jdoe …