dectalk express updates

[William Hubbs]

All,

I just updated the dectalk express driver based on a manual that Kirk
sent to me.  The new driver version is 2.17.

We were using the wrong value for the volume command:  It should be [:dv
g5 xx] where xx is between 60 and 86, so I have defined that and set 73
as the default.

Also, I have set the default rate and the range of rates to match what
the manual says, which is:  Default rate is 180 and range is from 75 to
650.

I am unable to find the documentation for the command we are using to
set the pitch, which is [:dv ap xx].  I need to know what the possible
values of xx for this command are, and whether you can give relative
values like [:dv ap +50] or something similar.  Using absolute pitch
settings for caps indication makes it so that a user can't set their
pitch to anything away from the default value.

Any assistance would be appreciated.

Thanks,

William