Partial panel variables ?

#1
Greetings,
Does anyone know what a partial panel variable is? Thanks!

Here's the list (gauge.h):

PP_ADF, // partial panel variables
PP_AIR,
PP_ALTIM,
PP_ATTITUDE,
PP_COM,
PP_COMPASS,
PP_ELECT, // there is no electricity in panels circuit
PP_ENGINE,
PP_FUEL_IND,
PP_HEADING,
PP_VERT_VEL,
PP_XPNDR,
PP_NAV,
PP_PITOT,
PP_TURN_COORD,
PP_VACUUM,

...
 
Top