Made this PCB faceplate that slides over the filter section so that when you use the vocoder, the legends on the knobs match the corresponding function. I found it useful to understand how the vocoder feature worked and how to design sounds with it. Easier that referencing the manual for what all the knobs get remapped to.
GitHub with the Gerber and KiCAD files here if you want to make your own: https://github.com/mprosk/virus_faceplate