m an external source and has not yet been
	      added to the program, making it immutable. As soon as the tag is assigned to a function it becomes
	      editable. If you delete the tag using the <IMG alt="" border="0" src=
	      "Icons.DELETE_ICON" width="16" height="16"> icon it will be removed from 
	      the program and once again be immutable.</P>

	    </BLOCKQUOTE>

	    <H3><A name="Add_Tag_To_Function"></A>Add to Function</H3>
	
	    <BLOCKQUOTE>
	      <P>Tags may be added to a function by sele