In VST3 SDK, ( doc/base/structSteinberg_1_1PClassInfo2.html ) it says:
"subCategories [kSubCategoriesSize]
module specific subcategories, can be more than one, logically added by the OR operator "
wdl-ol sets that up in resource.h
Code:
#define EFFECT_TYPE_VST3 kFx
and it appears that constant is utilized at line 125 of IPlug_include_in_plug_src.h
Code:
Vst::PlugType::EFFECT_TYPE_VST3, // Subcategory for this plug-in
How would one apply the "OR" option mentioned in the SDK?