Helper application and MIME type associations for file types
The mailcap file is used by the metamail program. Metamail reads the mailcap file to determine how it should display non-text or multimedia material. Basically, mailcap associates a particular type of file with a particular program that a mail agent or other program can call in order to handle the file. Mailcap should be installed to allow certain programs to be able to handle non-text files. Also included in this package is the mime.types file which contains a list of MIME types and their filename "extension" associations, used by several applications e.g. to determine MIME types for filenames.