Editing Help:Searching (section)

==== <code>incategory:</code> ====
{{anchor|incategory|Incategory}}<!-- Please leave anchors in place. Section redirects point to them. -->
{{shortcut|H:INCAT|H:INCATEGORY}}

Given as {{kbd|incategory:{{var|category}}}}, where [[Help:Category|{{var|category}}]] is the [[Help:Page name|page name]] of a category page, it lists pages assigned to the given category by methods including the addition of {{kbd|<nowiki>[[Category:</nowiki>{{var|page name}}<nowiki>]]</nowiki>}} to their wikitext. (Editors searching in namespaces other than mainspace will need to know [[WP:TCAT|the limitations]] these search results may contain.) If the category page name includes space characters; replace the spaces with underscores (e.g. {{kbd|incategory:Pages_of_interest}}), surround the page name with double quotes (e.g. {{kbd|incategory:"Pages of interest"}}) or both (but not on the [[Wikimedia Commons]] site). <code>incategory:</code> will also return pages in the adjacent subcategory {{crossref|pw=y|(see for example, {{nowrap|{{kbd|{{search link|category: incategory:History}}}}}})}}. Multiple <code>incategory:</code> filters may be applied. A more graphical alternative to a single filter is at [[Special:CategoryTree]]. Because categories are important structures for {{em|searching}} for related articles, any use of this prefix is particularly effective for searching. {{crossref|pw=y|(For more on using the categories themselves to find articles, see [[Wikipedia:FAQ/Categories]].)}}

{| class="wikitable"
|-
! Query
! Description
|-
| {{kbd|{{search link|Berlin incategory:German_chemists}}}}
| Starting with the articles listed at [[:Category: German chemists]], only the ones that have the word {{samp|Berlin}} in their text.
|-
| {{kbd|{{search link|incategory:"Suspension bridges in the United States" incategory:"Bridges in New York City"}}}}
| Articles that are [[WP:CI|common to both categories]] – the suspension bridges in New York City. This will return nothing since all NYC bridges are categorized in subcategories, and <code>incategory:</code> doesn't search in subcategories. {{crossref|pw=y|(For the probably desired result, see usage of <code>deepcategory:</code> in the next section.)}}
|-
| {{kbd|{{search link|incategory:"Suspension bridges in New York City" incategory:"Bridges in Brooklyn"}}}}
| Suspension bridges of Brooklyn.
|-
| {{kbd|{{search link|"feral cat" -incategory:"Category:Cats in the United Kingdom"}}}}
| Articles that contain the phrase {{samp|feral cat}}, but not listed in [[:Category:Cats in the United Kingdom]].
|}