Create directory using DSSSL

I'm trying to make a custom DSSSL stylesheet to create a BBEdit Glossary. In BBEdit, you can group similar functions inside a directory, so I want to create: Apache-specific Functions/ apache-foo apache-bar Other Functions/ ... I can get jade to make the correct chunks and place them in the correct place, but they fail if the directory doesn't already exist. How do I get jade to automatically create the directory? Or, how do I get jade to let me tell it to create a directory from within the DSSSL stylesheet? (Or, how can I get jade to let me call a remote program, like mkdir?) I've searched all over for this, but DSSSL isn't quite in vogue any more, so documentation is hard to find. -adam PS: I'd prefer not to need to create the directories manually, because then they'll fail if we modify the docs to add or remove new sections. -- adam@trachtenberg.com author of o'reilly's php cookbook avoid the holiday rush, buy your copy today!