HTML CSS Reference/HTML Attributes Reference/multiple
"multiple" Example
<HTML>
<head><Title>Example For multiple</Title></head>
<BODY>
<body onUnload="document.forms[0].reset()">
<form name="form1" method="post" action="">
<select name="Chapters" multiple>
<option>Chapter 1</option>
<option>Chapter 2</option>
<option>Chapter 3</option>
<option>Chapter 4</option>
<option>Chapter 5</option>
<option>Chapter 6</option>
</select>
</form>
</body>
</BODY>
</HTML>
multiple is applied to
+----------------+--------------------------------------------------------------+
| Applied_To |<select> |
+----------------+--------------------------------------------------------------+
"multiple" Syntax and Note
Note:
This attribute sets whether <option> elements can be multiple selected.
Pressing the SHIFT key or CONTROL key to do the multiple selection.
Syntax:
<select multiple> . . . </select>