Hi,
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