From Graphene Theme Documentation
|40x40px||This is a counter category. It contains items specifically for the purpose of counting them, in order to assist with maintenance. It is not part of the encyclopaedia; do not include it in content categories.|
|40x40px||Administrators: Please do not delete this category even if it is empty!
This category may be empty occasionally or even most of the time.
|40x40px||This category is not shown on its member pages, unless the appropriate user preference is set.|
|Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages.
Please add categories and interwikis to the /doc subpage. Subpages of this template.