This can be done in [[module:RailGauge/extra]].<br>
{{#ifeq:{{FULLPAGENAME}}|Module:RailGauge/extra|
<br>New gauges can be added through [[module:RailGauge/extra]]. Once added, its tracking category (mentionings) can be created by writing}}
:<code><nowiki>{{#invoke:RailGauge/autodocument|createCatMentions|<your new alias goes here>}}</nowiki></code><br> on a page. That will a [create] link to click.
Note: only add categories for gauges that are without doubt.}}