> Very, very basic question. Sorry ;)
>
> *Where* do you set this?
>
> Thanks,
>
> Nicola ;)

[snip]

> Try
>
> java -Xms512m -Xmx512m -jar saxon8.jar source.xml style.xsl
>
> to allocate 512Mb, which should be enough for 40Mb of input unless the
> transformation uses a lot of temporary storage.

The answer was in your own post :)

Cheers
andrew