Wow… I actually took the rack screws out and looked behind the Delta box because I had totally forgotten it has an external PSU… Duh!
When Opcode released Vision, then Studio Vision, then Studio Vision DSP, and finally Pro, They were bleeding-edge apps that did stuff that amazed everybody… stuff that many DAW's still don't do or have only recently begun to. They expected you to read the instructions with a fresh mind, let's call it less "uncontaminated" by use of other products.
It may be helpful to remember that the SVP manuals were written long ago when many people sere still using or just coming up from 68k hardware and floppy disks. It was written to guide users thru a process to set up their system to best advantage step by step. From a 2024 viewpoint there may seen to be things not stressed hard enough, BUT it was also before people had an entire decade or two to experience recording with other advanced DAW's. The lack of direct reference to or even the use of the term "multitrack recording" was understandable. Audio interfaces like the Delta 1010 were rare and expensive. It was also more likely – and still is – for that to be less of a priority in personal DAWs. Personally, 95% of my recording is done one track at a time. Of course there are times when more than one is required and I even have a Tascam 688 8-track Portastudio I occasionally use for live recording and then dump the tracks - all 8 at once - into SVP. But hopefully, you see my point. Lastly, back then it was uncommon for anyone to "go back" to SVP after learning DAW operation and recording and MIDI in general from other apps and just try to hack their way thru everything as you like to do.
If you were to start from scratch,you would be guided down a path that would take you thru setting up your Delta or other interface and you would find your way to the "Audio Instruments and Routings" Window where you would see that, after/under the Instruments list, there are both "Inputs" and "Outputs" lines matching the Ins and Outs on your Delta with checkboxes to enable/disable, route and configure them. Afterwards, other stuff in other windows would begin to just fall into place. The MIDI operations, including stuff like naming devices rather than just "channel 1, 2" etc. sets up the same way when integrated with OMS – which sadly, I must report, also has its own manual.
The good news is that once you get all of it done, suddenly everything makes sense. Everything you do is labelled with your names, your preferences and the way you like to work. It works so damn well in fact, it's utterly amazing they not only thought of everything to begin with but also managed to implement it on the relatively primitive hardware that existed then. Opcode was an amazing operation years ahead of most everybody else. MOTU was constantly playing "catch up" with them. If not for Henry Jackass and Gibson, their future would have been unlimited.
My comment re: Command keys and such was mainly to illustrate how thorough and thought-out the app is. Again, set it up as you like and it will work as you want it to. You're in the SVP fun zone right now where every day you find some new little thing that makes you say "Damn, that's cool"…
Of course, it would be nice have the use of all the other little install setup books, tech support, updates and such that you get from a company that's actually in business, but hey, there's always PoorTools subscriptions…