Timer
A WML card can be set up to use the timer function of WML. The time unit of the timer is 1/10 of a second.
The example below will display a message for 3 seconds, and then take you to the file "test.wml":
<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card ontimer="test.wml"> <timer value="30"/>
<p>
Some Message</p>
</card>
</wml>