l.fromString "x-alice:/lib/system/TextIO")
	                            : (structure TextIO : TEXT_IO)
	open TextIOComp</PRE>
	<P>The <TT>open</TT> declaration will pull the actual <TT>TextIO</TT>
	structure into scope.</P>
    </DD>

    <DT>
      <TT><A name="enter">enter</A> (<I>url</I>, <I>com</I>)</TT>
    </DT>
    <DD>
      <P>enters <TT><I>com</I></TT> into the component table, under name
	<TT><I>url</I></TT>.  Raises <TT><A href="#Conflict">Conflict</A></TT>
	if the component table already had an