XUL

XUL(“zool”): XML User Interface Language is Mozilla's XML-based language for building user interfaces of applications like Firefox.What can XUL control? The following lists the user interface controls provided by XUL.

1. <button> 

<button label="Save" accesskey="S"/>

<button type="menu" label="view">     <menupopup>            <menuitem label="List"/>            <menuitem label="Details"/>     </menupopup></button>

there are many code like these to make elements for user interaction.