A portallayout lays out a container which can have multiple columns, and each column may contain one or more panel. Portallayout provides a way to drag-and-drop panel into other portalchildren from the same portallayout.

Use Portallayout need assign width (either present or pixel) on every Portalchildren, or we cannot make sure about layout look.

<portallayout>
    <portalchildren width="30%">    
        <panel height="150px" title="Google Tools">        
            <panelchildren>...</panelchildren>            
        </panel>        
        <panel height="300px" title="LabPixies Clock">        
            <panelchildren>...</panelchildren>            
        </panel>        
    </portalchildren>    
    <portalchildren width="30%">    
        <panel height="150px" title="Google Tools">        
            <panelchildren>...</panelchildren>            
        </panel>        
    </portalchildren>    
</portallayout>