Attributes:
This is the list of known attributes with a brief description, most of them are self explanatory.
MIXLVL
mix level
MSCLVL
music level
MIXMAS
mix master
VOLUME
volume
PAGLVL
paging level
MSGLVL
message level
CHMLVL
chime level
PAGMAS
paging master
SELECT
select
DELAY
delay
TRIM
trim
INGAIN
input gain
EQGAIN
equalizer gain
MINLEVEL
minimum level
MAXLEVEL
maximum level
PMBASSIGN
paging mic button assign
STRING
string
WALLPANEL
wall panel
PAGINGMIC
paging microphone
SERIAL
serial
SPDIFOUT
SPDIF digital output
DYN
dynamics
LIM
limiter
TYPE
type
Q
Q-factor
