Button

System

Hi,

I am creating Button on DCT using the following code
<item name="myButton" rowcontinue="t" >
<label> </label>
<hidden>
<cgi-callout label=">>"/>
</hidden>
</item>

When i am using either label=">" or label=">>" it is creating buttons.

When i am using either label="<" or label"<<" it is giving error??

Is there any specific reasn for this ???

Thanx in Advance