use.id.function boolean
use.id.function Use the XPath id() function to find link targets?

## Description

If 1, the stylesheets use the `id()` function to find the targets of cross reference elements. This is more efficient, but only works if your XSLT processor implements the `id()` function, naturally.

THIS PARAMETER IS NOT SUPPORTED. IT IS ALWAYS ASSUMED TO BE 1. SEE xref.xsl IF YOU NEED TO TURN IT OFF.