<APPLET ...> puts an applet in your page. In its simplest use, <APPLET ...> requires the use of CODE (to tell what applet file to load), WIDTH (to tell how wide the applet should be), and HEIGHT (to tell how tall the applet should be).
The contents of <APPLET ...> is either the <PARAM ...> tag, or information which
is ignored by browsers which understand <APPLET ...>. This method of ignoring the
contents allows you to put in text for browsers which don't understand <APPLET ...>.