(: Name: Constr-ws-tag-4 :)
(: Written by: Andreas Behm :)
(: Description: strip mixed whitespace :)

declare boundary-space strip;
<elem>   	
        	  <a>                   

	
        </a>	
<a>             </a>    	         <a>  <b>

          </b>

  </a>


  	    </elem>