FamilySearch Wiki:Naming Conventions
This page offers best practices in naming articles, categories, images, files, and templates.
Special rules for templates
Spaces in the name are allowed, e.g. Template:Train topics. The first character (only) is not case-sensitive, so Template:Cleanup and Template:Cleanup are the same template, but Template:Cfd and Template:CfD are not.
The template name in general should be short. Many on Wikipedia are abbreviations.
Only the system admin can create a namespace. Namespaces should only be created after much discussion. The name should be a single word.
Wikipedia:Manual of Style#Section headings
Help:Section#Creation and numbering of sections
Wikipedia:Naming conventions & categories