Create a MIME (Multipurpose Internet Mail Extensions) object.
mime(content_type, content_disposition, charset, encoding, cid = NA, ...)
The MIME type of the content.
Should the content be displayed inline or as an attachment?
How to interpret the characters in the content. Most often either UTF-8 or ISO-8859-1.
How to encode binary data to ASCII.
An optional Content-Id.
Other arguments.
A MIME object.