Template:WPBannerMeta/hooks/cats/sandbox
 | __EXPECTUNUSEDTEMPLATE__This is the template sandbox page for Template:WPBannerMeta/hooks/cats (diff). |
 | This template is used on 33,000+ pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them. |
| Syntax | ||
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| <syntaxhighlight lang="wikitext" style="font-size:90%">
... }} </syntaxhighlight> |
This hook allows you to add up to ten optional categories, that will be added to a page if a particular parameter is defined. Each category will be added if the corresponding parameter is non-empty. This template displays no visible output, so it can be put anywhere in the template code; common practice is to put it attached to a task force hook, such as |TF_n_HOOK=.