deskthority

Hi I posted a thread on Geekhack but it doesn't seem to get any response so I guess I will try here aswell. I have built my own handwired keyboard using matt30s informative guides at deskthority. Unfortunately I've hit a small bump and I am finding it very difficult to solve it so I was hoping that ...

Is there a list of all special commands? I need to add characthers such as '-', 'å', 'ä', 'ö' but the compiler wont recognize them? Is their some kind of wiki or something I could use to check up all these?

I seem to have a problem with my invoice, I am ordering a bunch of different things among them a 6.25 plate stabilizer which the bot haven't forwarded in my invoice. How do I fix this?

I was wondering, are the 1N4148 diodes also available for purchase from you? When buying the plate mounted switches for example MX1A-E1DW with diode, does the diode come soldered on the switch or loose?