mirror of https://github.com/lianthony/NT4.0
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 lines
2.2 KiB
1 lines
2.2 KiB
<HTML>
<HEAD>
<TITLE>MIME</TITLE>
</HEAD>
<BODY>
<A NAME="TOP"></A>
<H1>MIME</H1>
MIME (or Multipurpose Internet Mail Extensions) is a standard for
sending multimedia file types by e-mail. File types are
identified by their MIME type, a value that specifies the type and subtype of the data.
For example, the MIME type used to identify JPEG files is
<I>image/jpeg</I>.
<P>MIME type information is included with most files sent over the
Internet. This information is used by Mosaic to determine the type of
file. If a MIME type is not provided, Mosaic uses the file extension to
determine the file type. After determining the file type, Mosaic either
handles the file type internally or sends the file to the appropriate
helper application.
<P>If Mosaic cannot handle the file type and an appropriate helper
application is not available, the Unhandled File Type dialog is
displayed. This dialog allows you to save the file without viewing it;
configure a helper application and view the file; or cancel the file
transfer.
<P><B>To determine the MIME type for a given file type:</B>
<P>
<OL>
<LI>Open the list of <A
HREF="ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/media-types">registered
MIME types</A>.
<P><LI>Choose the MIME type that best describes the file type.
<P><LI>If none of the registered MIME types describe the file type, you
can define your own MIME type/subtype. For the <I>type</I> part
of the MIME type, use one of the following types:
<UL>
<P><LI>text
<LI>multipart
<LI>message
<LI>application
<LI>image
<LI>audio
<LI>video
</UL>
<P>If none of these types describe the file type, use the
<I>application</I> type.
<P><LI>Use your own description for the <I>subtype</I>. To distinguish
your subtype from registered subtypes, type "x-" before the
subtype. For example: application/x-acad
</OL>
<P>Additional information:
<P>
<UL>
<LI><A HREF="http://www.cis.ohio-state.edu/hypertext/faq/usenet/mail/mime-faq/top.html">MIME FAQ</A>
<LI><A HREF="http://www.ncsa.uiuc.edu/SDG/Software/Mosaic/Docs/rfc1521.txt">Technical
overview of MIME (RFC 1521)</A>
<LI><A HREF="http://ds.internic.net/rfc/rfc1590.txt">MIME type registration
procedure</A> </UL>
<HR>
<A HREF = "topics.htm">Help Contents</A> | <A HREF="index.htm#TOP">Index</A>
</BODY>
</HTML>
|