< 0: no category, else group index + 1
< category label, e.g. "Osc 1"
< index where this parameter should be displayed (starting with 0)
< @see VstParameterFlags
< reserved for future use
< parameter label
< large float step
< large integer step
< integer maximum
< integer minimum
< number of parameters in category
< zero
< short label, recommended: 6 + delimiter
< small float step
< float step
< integer step
Parameter Properties used in #effGetParameterProperties.