refentry.version.profile string
refentry.version.profile Specifies profile for refentry "version" data
(($info[//productnumber])[last()]/productnumber)[1]| (($info[//edition])[last()]/edition)[1]| (($info[//releaseinfo])[last()]/releaseinfo)[1]

## Description

The value of refentry.version.profile is a string representing an XPath expression. It is evaluated at run-time and used only if refentry.version.profile.enabled is non-zero. Otherwise, the refentry metadata-gathering logic "hard coded" into the stylesheets is used.

A "source.name" is one part of a (potentially) two-part Name Version "source" field. For more details, see the documentation for the refentry.source.name.profile parameter.