What are the MIME types used by helper applications?
HTTP servers use HTML formatting. Netscape software has the built-in capability to read HTML-formatted pages (as well as the GIF, JPEG, and XBM graphic file formats). Netscape can interpret many other file formats with the help of external helper applications. To accommodate the file formats requiring helper applications, Netscape keeps a mapping of file formats to helper applications. MIME (Multipurpose Internet Mail Extensions) is a standardized method for organizing divergent file formats. The method organizes file formats according to the file’s MIME type. When Netscape software retrieves a file from a server, the server provides the MIME type of the file. Netscape uses the MIME type to establish whether the file format can be read by the software’s built-in capabilities or, if not, whether a suitable helper application is available to read the file. For servers that do not provide a MIME type with a file, Netscape interprets the file’s extension (a suffix appended to a file name).
