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docs/content/en/content-management/cross-references.md

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----
-title: Links and Cross References
-description: Shortcodes for creating links to documents.
-date: 2017-02-01
-publishdate: 2017-02-01
-lastmod: 2017-03-31
-categories: [content management]
-keywords: ["cross references","references", "anchors", "urls"]
-menu:
-  docs:
-    parent: "content-management"
-    weight: 100
-weight: 100	#rem
-aliases: [/extras/crossreferences/]
-toc: true
----
-
-
-The `ref` and `relref` shortcode resolves the absolute or relative permalink given a path to a document.
-
-## Use `ref` and `relref`
-
-```go-html-template
-{{</* ref "document.md" */>}}
-{{</* ref "#anchor" */>}}
-{{</* ref "document.md#anchor" */>}}
-{{</* ref "/blog/my-post" */>}}
-{{</* ref "/blog/my-post.md" */>}}
-{{</* relref "document.md" */>}}
-{{</* relref "#anchor" */>}}
-{{</* relref "document.md#anchor" */>}}
-```
-
-The single parameter to `ref` is a string with a content `documentname` (e.g., `about.md`) with or without an appended in-document `anchor` (`#who`) without spaces. Hugo is flexible in how we search for documents, so the file suffix may be omitted.
-
-**Paths without a leading `/` will first  be tried resolved relative to the current page.**
-
-You will get an error if your document could not be uniquely resolved. The error behaviour can be configured, see below.
-
-### Link to another language version
-
-Link to another language version of a document, you need to use this syntax:
-
-```go-html-template
-{{</* relref path="document.md" lang="ja" */>}}
-```
-
-### Get another Output Format
-
-To link to a given Output Format of a document, you can use this syntax:
-
-```go-html-template
-{{</* relref path="document.md" outputFormat="rss" */>}}
-```
-
-### Anchors
-
-When an `anchor` is provided by itself, the current page’s unique identifier will be appended; when an `anchor` is provided appended to `documentname`, the found page's unique identifier will be appended:
-
-```go-html-template
-{{</* relref "#anchors" */>}} => #anchors:9decaf7
-```
-
-The above examples render as follows for this very page as well as a reference to the "Content" heading in the Hugo docs features pageyoursite
-
-```go-html-template
-{{</* relref "#who" */>}} => #who:9decaf7
-{{</* relref "/blog/post.md#who" */>}} => /blog/post/#who:badcafe
-```
-
-More information about document unique identifiers and headings can be found [below]({{< ref "#hugo-heading-anchors" >}}).
-
-
-## Ref and RelRef Configuration
-
-The behaviour can, since Hugo 0.45, be configured in `config.toml`:
-
-refLinksErrorLevel ("ERROR") 
-: When using `ref` or `relref` to resolve page links and a link cannot resolved, it will be logged with this log level. Valid values are `ERROR` (default) or `WARNING`. Any `ERROR` will fail the build (`exit -1`).
-
-refLinksNotFoundURL
-: URL to be used as a placeholder when a page reference cannot be found in `ref` or `relref`. Is used as-is.
-
-
-[lists]: /templates/lists/
-[output formats]: /templates/output-formats/
-[shortcode]: /content-management/shortcodes/
-[bfext]: /content-management/formats/#blackfriday-extensions