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WML <prev> tag

The <prev> task represents the action of returning to the previous card visited. If no previous URL exists, specifying <prev> has no effect.

Note: The content between the <prev>..</prev> tags is optional. If you do not specify any content, you must use <prev/>.

Syntax

<prev>
..<setvar>..
</prev>

Attribute	Value	Description
class	cdata	Sets a class name for the element. The class name is case sensitive. An element can be connected to multiple classes. Multiple class names within the class attribute are separated by white space
id	id	Sets a unique name for the element

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">

<wml>
<card> 
<p> 
 <do type="accept" label="Back"> 
  <prev> 
   <setvar name="x" value="30"/> 
  </prev> 
 </do> 
</p> 
</card> 
</wml>

A <prev> tag with no content:

<?xml version="1.0"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN"
"http://www.wapforum.org/DTD/wml_1.1.xml">

<wml>
<card>
<do type="accept" label="Back">
 <prev/>
</do> 
<p>
Hello World!
</p>
</card>
</wml>