accessing filename in .muttrc

[mutt-lists@xxxxxxxxxxxxxxxx]

Hi,

I want to print to PDF so I set this print-command:

set print_command="a2ps -o - -1gEmail --borders=no --strip=3 | ps2pdf - 
$HOME/Maildir/mail-output.pdf"

I would like to use something specific to the email for the filename such as 
date, subject, sender or filename.

Is there any way I can access these values in .muttrc ie. can I do something 
like replace mail-output.pdf with something like %s ????


Thanks,

WAG