Merge commit 'a6e635ca7d905d9ec3ffd708db2694f680b03aae'

docs/content/en/templates/_common/_index.md

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+---
+cascade:
+  _build:
+    list: never
+    publishResources: false
+    render: never
+---
+
+<!--
+Files within this headless branch bundle are Markdown snippets. Each file must contain front matter delimiters, though front matter fields are not required.
+
+Include the rendered content using the "include" shortcode. 
+-->

docs/content/en/templates/_common/filter-sort-group.md

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+---
+# Do not remove front matter.
+---
+
+{{% note %}}
+The [page collections quick reference guide] describes methods and functions to filter, sort, and group page collections.
+
+[page collections quick reference guide]: /quick-reference/page-collections/
+{{% /note %}}