Template:Subject category/core/doc

This template implements the initial phase of internal processing for template Subject category. On entry here, all that is known is the name of the subject.

Usage
There is one parameter, assumed to be specified and non-blank. This template checks that the subject page exists and is correctly formatted for extracting its parents. If all is well, extracts the parents from the subject page and calls subject category/core2.
 * &mdash; the name of the subject. No   prefix.