Profiling usage

Variants of standard XSL stylesheets provided with profile- prefix

Called with profile.xxxx parameter and value to set profile

	Note
	The exact method of providing a parameter and value on the command line varies with each XSLT processor.

Examples:

$ xsltproc -o sample.html -stringparam "profile.os" "linux" $DB/html/profile-docbook.xsl sample.xml
$ saxon -o sample.html sample.xml $DB/html/profile-docbook.xsl "profile.userlevel=beginner"

Multiple values separated by semi-colons (by default), as in:

xsltproc ... -stringparam "profile.os" "linux;mac" ...

Can be imported into a customization layer