When used with the "Redirect category shell" (Rcat shell) template:
This page is a redirect. The following categories are used to track and monitor this redirect:
From an ISO 639 code: This is a redirect from a title that is an ISO 639 language code to an article about the language.
When appropriate, protection levels are automatically sensed, described and categorized.
Template {{Redirect category shell}} may be used to add one or more rcat templates, along with their parameters and categories, to a redirect. For more information, see the documentation page below.
When used by itself:
From an ISO 639 code: This is a redirect from a title that is an ISO 639 language code to an article about the language.
Any breaking changes to this template, including moving it or nominating it for deletion, must be communicated in advance to Twinkle's users and maintainers at Wikipedia talk:Twinkle. The standard installation of Twinkle relies on this template. Thank you.
This redirect category (rcat) template is added to redirects that are related to ISO 639, the language code developed by the International Organization for Standardization (ISO). The redirect titles have the form ISO 639:xxx, where xxx is a three-letter ISO 639 code. In the category they are automatically sorted by the "xxx" (without the "ISO 639:" prefix).
These redirects are maintained by PotatoBot's Task 2.
Usage
Use this rcat template on mainspace redirects only.
Please do not alter the printworthy settings of this rcat without first notifying the Version 1.0 Editorial Team, who are responsible for any and all materials, including redirects, that go into a printed version of Wikipedia.
Add this rcat to a redirect page (not a talk-page redirect) in the following manner:
#REDIRECT[[(target article title)]]{{Rcat shell|{{R from ISO 639 code}}{{R unprintworthy}}}}
Template {{Rcat shell}} is an alias for the Redirect category shell template, which may be used to add as many appropriate rcats as needed, usually from one to seven, along with their parameters, to a redirect. For more information see the documentation on its template page. This rcat may also tag a redirect individually:
#REDIRECT[[(target article title)]]{{R from ISO 639 code}}
Use this rcat to tag any mainspace redirect from an ISO 639 language code to an article about the language. An example is ISO 639:zhoISO 639:zhoChinese language.
Additional parameter
An optional unnamed parameter, |1=, may be used to alter the language series and the category in the following manner:
{{Rcat shell|{{R from ISO 639 code|1=N}}{{R unprintworthy}}}}
or the 1= may be omitted
{{Rcat shell|{{R from ISO 639 code|N}}{{R unprintworthy}}}}
and if used individually:
{{R from ISO 639 code|N}}
...where N is the part number of the ISO 639 standard; currently, N may be a 1 or a 5.
Instead of the basic category Redirects from ISO 639, the redirect will then populate either: