Translations:Mutt/24/en

The above example tells Mutt what to do to "view"   and   files. For the former it should run a program called, for the latter the program. You can go wild with these to for example display rendered HTML (give a try), render vcards, or show ASCII representation of attached images. All you need to do is define how to call the program in your, and tell Mutt to try to view it inline using the  directive.