Sat Jan 13, 2024 3:08 pm
The stepper does allow a partial implementation of memory levels -- as one way to set it up -- but it's limited to "general" (whole organ) combinations.
Combination sets, as Martin pointed to, are fully equivalent to memory levels, including the organist's registrations saved on Hauptwerk master generals, stepper frames, divisional/scoped pistons, reversibles, and the master crescendo.
I think most samplesets that have their own internal pistons and crescendo (in addition to HW's registration tools) probably also save those in combination sets, but I'm not certain if that's optional for the sampleset producer. EDIT: The user guide says these are saved in combination sets, too.
It can be helpful in this to use the same physical piston scheme across all samplesets, by using MIDI autodetect "for all organs" to set up master generals, reversibles, stepper pistons, and scoped (divisional etc.) pistons on the same console buttons for every sampleset, which you only have to assign once. Otherwise it can get very confusing for visiting organists when the pistons might trigger different functions on different samplesets. You can use reversibles for couplers, too.