Applets included in this document do not have corresponding valid textual descriptions. A valid description is a string value of the ALT attribute that is not any of the following:

• an empty string ("")
• a blank string with one or more spaces (" ")
• the name of the file containing the applet
• the size of the applet file

Add the ALT attribute to the APPLET tag.

The ALT description should convey the same information as the applet, and it should explain the role the applet plays on the page: why it is there, what it represents, how it presents the information.

Here are cases where applets may not run:

• Some users view the page on PDAs and cellular phones that cannot execute applets
• Some applets use libraries written for a specific operating system such as Windows, MacOS, or Linux
• Some users of graphical browsers disable applets for security reasons

You can use the ALT attribute to describe the behavior and content of the applet to these users.