I am trying to debug one my macro and finally I reduced it to the simplest form: it accepts an argument, wraps it with “set-bold”, “reset-bold” font requests and that’s all. But the problem is that I want to pass it multiple lines as 1 argument. I tried to embed “n” inside the string, but without success (I still don’t know if it’s possible). So, I switched to a diversion:

I have very simple groff file:

Given 2 number registers, embedding this in a document works fine: