Write to a separate file from a custom set of engravers

[Maurits Lamers]

Hi all,

If I create an additional set of engravers in Scheme, what approach should I 
take if I want the output of these engravers to end up in a separate output 
file?
This separate file should not be the generated post script file or a log file.
I could call (open-file ) and write to it, I could also create a closure in 
which I get access to this file, but this doesn’t give me any control on the 
order in which the output is written to the file, or does it?
What would be the best approach here?

Thanks in advance!

Maurits