Explicitly associate labels/prompts with the fields they represent.

Screen shot of an example edit field with First Name as label

Adding labels in Dreamweaver

Input Tag Accessibility Attributes dialog in Dreamweaver

Adding labels in HTML

<label for=“firstname”>First Name:</label>
<input type=“text” name=“fname” id=“firstname”>

In PDF, use tooltips for labels

Text Field Properties dialog in Adobe Acrobat Pro, with First Name entered in the Tooltip field