HTML Attribute for <ISINDEX ...>
PROMPT ="text string"

Usage Recommendation
Use it, but don't rely on it.

PROMPT specifies the prompt string to put before the input field. The default prompt is "This is a searchable index. Enter search keywords:", which is less than descriptive. PROMPT allows you to give your own prompt:

This Code Makes This 
<HTML>
<HEAD>
<TITLE>Idocs: ISINDEX Example Using Congresspeople</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF">
<ISINDEXPROMPT="Enter the name of your state: ">
<H1>Example of &lt;ISINDEX&gt;</H1>

This page uses the &lt;ISINDEX&gt; tag. Type in the name 
of your state for a listing of your congresspeople.
<HR>
</BODY>
</HTML>

<ISINDEX ACTION="..."> >