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Squashed 'docs/' changes from fdea5430f..0584815c8

0584815c8 Add a page about Pages methods (Next, Prev)
653dc8db5 Add note about default bgColor

git-subtree-dir: docs
git-subtree-split: 0584815c8a9ef49c9682b6468a9f2a1e9f05be46

--- a/content/en/content-management/image-processing/index.md

+++ b/content/en/content-management/image-processing/index.md

@@ -133,6 +133,8 @@

 For color codes, see https://www.google.com/search?q=color+picker

+**Note** that you also set a default background color to use, see [Image Processing Config](#image-processing-config).

+

 ### JPEG Quality

 Only relevant for JPEG images, values 1 to 100 inclusive, higher is better. Default is 75.

--- /dev/null

+++ b/content/en/variables/pages.md

@@ -1,0 +1,30 @@

+---

+title: Pages Methods

+linktitle:

+description: Pages is the core page collection in Hugo and has many useful methods.

+date: 2019-10-20

+categories: [variables and params]

+keywords: [pages]

+draft: false

+menu:

+  docs:

+    title: "methods defined on a page collection"

+    parent: "variables"

+    weight: 21

+weight: 21

+sections_weight: 20

+aliases: [/pages]

+toc: true

+---

+

+Also see [List templates](/templates/lists) for an overview of sort methods.

+

+## .Next PAGE

+

+`.Next` and `.Prev` on `Pages` work similar to the methods with the same names on `.Page`, but are more flexible (and slightly slower) as they can be used on any page collection.

+

+`.Next` points **up** to the next page relative to the page sent in as the argument. Example: `{{with .Site.RegularPages.Next . }}{{.RelPermalink}}{{end}}`. Calling `.Next` with the first page in the collection returns `nil`. 

+

+## .Prev PAGE

+

+`.Prev` points **down** to the previous page relative to the page sent in as the argument. Example: `{{with .Site.RegularPages.Prev . }}{{.RelPermalink}}{{end}}`. Calling `.Prev` with the last page in the collection returns `nil`. 

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