how to save the project from the control surface (A-500PRO)

This is probably a silly question, but I'm having a hard time finding an answer because the signal-to-noise ratio is so low. I'm searching for terms like: save, file, project. The search engine is not being kind to me in the results. ;)

Anyway, I've got a Roland A-500PRO, and it's working great. ACT works, I can use the control strip above the keys to do things like play/pause, rewind, stop, etc. But something obvious is missing. How do I SAVE MY SONAR PROJECT after a good take?

I know I can setup the 8 pads on the right as control buttons and can assign File-Save to one of those. But I'd rather not change those unless I have to, since I'd like to use them as Notes rather than buttons sometimes.

What I'm wondering is why it's not setup already. Isn't File-Save the MOST important thing you can do from a control surface, right after you record a take? I'm thinking there must be some keypress combination on the A-PRO that saves the project in Sonar. Or something else that's so obvious that they don't even mention it.

How do you A-PRO users out there save your Sonar projects while sitting at the control surface? I'm trying to give up using the mouse while at the MIDI controller. Is it possible?

I think the whole idea of a control surface that you can control the program without needing a keyboard and mouse, so I'm trying not to use those. I can re-program a touchpad, but I was hoping there was something more basic, and sort of front-and-center, for such a vital command. I would have thought it would be already programmed to be honest.

Thanks for your replies Jlien X.

There's no real reason why the control surface can't/shouldn't be used to save the project. And that's the only thing missing from the default button assignments, if you think about it. I'm just surprised it's missing at all. ;)

Once I assign File-Save to a button on my A-500PRO, I don't need the mouse or computer keyboard at all, except to add or modify instruments, or to do mixing/mastering.

In fact, even basic mixing can be done quite well using the surface's sliders and buttons. Of course you'd still need the computer keyboard/mouse to do more hardcore editing or adding FX.

why not just use the keyboard command CNTR+S