\UseVerbatim, which does almost exactly what I need. I want to use this with a custom
lstlisting environment. The environment looks exactly how I want it, with the backgroundcolor and everything (it's quite involved).
So what I need is some sort of
\UseLstlisting, so I can store the contents of a lstlisting environment in a macro at one point and use it at a later point. How can I achieve this?