Hi For audio plugins it's possible to insert both DX-type and VST type. MFX plugins for midi is DX technology - so why not VST type there too? Thinking of large VST bundles like piz midi plugins. It also has a ini-file to set how to identify itself - as synth, so so audio ins/outs or not etc.   I use today inside Patchwork from Bluecat, but would be handy for general use without serializing many tracks. Thanks for any support on this.