<FIELDSET> defines a group of form elements as being logically related. The browser draws a box around the set of fields to indicate that they are related.For example, a form might contain a few fields about name and email, some fields asking for opinions, and a field for "other comments".
<FIELDSET> could be used to group those fields like this:
name: <INPUT NAME="realname"><BR>
email: <INPUT NAME="email">
favorite color: <INPUT NAME="favecolor"><BR>
<INPUT TYPE=CHECKBOX NAME="onions"> like green onions<BR>
<INPUT TYPE=CHECKBOX NAME="cookies"> like cookies<BR>
<INPUT TYPE=CHECKBOX NAME="kimchee"> like kim chee<BR>
<TEXTAREA NAME="comments" ROWS=5 COLS=25></TEXTAREA>
which gives us this form:
<FIELDSET> is a block level element, so theoretically we didn't need the
<P ...> tags between the fieldsets. However, because
<FIELDSET> is not yet supported by major browsers such as Netscape, we put in the
<P ...>s to keep the groups separated.
<LEGEND ...> to add a text label to each fieldset.