When used with the "Redirect category shell" (Rcat shell) template:
- 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 a NLM abbreviation: This is a redirect from a NLM publication title abbreviation to the unabbreviated publication title, or an article containing information about the publication.
- In cases of an NLM abbreviation with partially missing dots, or dots used inappropriately, please use {{R from misspelling}}.

Usage
Template usage
- Use this rcat to tag mainspace redirects that are abbreviations that follow the National Library of Medicine standard for serial (e.g. medical journal) abbreviations. An example usage of this rcat is J Clin Invest
Journal of Clinical Investigation.
- Add this rcat to a redirect page (not a talk-page redirect) in the following manner:
#REDIRECT [[(target article title)]]
{{R from NLM abbreviation}}
- This is in accord with instructions found at Wikipedia:REDCAT.
- This rcat formats redirect page titles in italics by default.
- This redirect category (rcat) template places pages into both Category:Redirects from NLM abbreviations and Category:Printworthy redirects by default. In 2003, efforts were begun to support the Wikimedia Foundation's goal of increasing access and availability of Wikipedia articles in printed versions. Redirects from NLM abbreviation codes are suitable for a printed version. In other words they are printworthy.
Aliases
- Also known as... – list of templates that redirect here and may also be used
- {{R from NLM}}
- {{R from MEDLINE abbreviation}}
- {{R from MEDLINE}}