the VO keyboard has 8 macro keys. how do I bind to them?
as an example, if I wanted to have toggle turbo key, I think I would first create an alias then a bind.

alias turbo +turbo

but how do I reference the macro key?

/bind M1 turbo?

the Macro keys on the mobile keyboard aren't like that. Instead, if you press and hold them, they will save your currently written message. You can then press it to paste that into the interface quickly.

If you want to 'bind' something, but on mobile, your best bet is DroidButtons. Create the alias, then simply use that alias directly.

Also, there is a command for 'toggleturbo' (or was it 'turbotoggle' ? I forget...)

that's too bad. I was hoping to find a way of adding binds on Steam Deck

I'm not intimately familiar with the steam deck (maybe some day!), but the steam deck controls act as a gamepad in VO, right? In that case, you could bind commands to the gamepad buttons. You'll notice in the 'keyboard' submenu of the controls configuration, selecting any command and using a gamepad button will work there. More importantly, it will give you the joy and button IDs, in the form of JOY#BUTTON##. You can use this instead of a keyboard button when using /bind.

Beyond that... i'm not sure atm, sorry.