Help with getting blueprints.

[johnstan]

I'm not sure what would be a spoiler or not so I'll just put everything in yellow.

I'm stuck at calibrating the archive arm. I checked a walkthrough but the numbers are always different for each game and I just can't get my head around how that arm works. If someone can explain the principals behind it or even just give me the answer that would be great.

The blueprint code is: S26
The Will code is: R27

[Starmaker]

You need the arm to give you document S26 (+1 letter, -1 number) when you request R27. Thus, when the calibration routine asks you to point at M20, you have to point it at M+1/20-1 = N19

[johnstan]

Wow, so simple once it's explained. Thank you very much!

[Jazzy]

I'm stuck with getting the security code.

[Rognik]

I'm stuck with getting the security code.

You can't get the security code to get in. Leave that to Johnsen. Instead, you need to bait and switch, since you can ask for the one repeatedly.

[Jazzy]

Thank you, at least I can stop digging for it.  I wanted to avoid an all-out spoiler.

Boy, Bennet sure isn't very nice to Ray. "Hey, you!"

Edit: I can't figure it out; maybe there are several things I'm missing. I'm a bit stuck.

Ok, got 'em, thanks all, for the hints.