let's say I want to produce two different versions of my document, one with papersize a4, the other with papersize a5.

```

\setuppapersize[a4][a4]
\startmode[a5]
  \setuppapersize[a5][a5]
\stopmode

```

What is the best way to produce both versions with one command? A makefile? Or is there a way to do this with context alone?

Best,

Denis