esentation in 
the screen space.
If <EM>do-clip</EM> is non-nil, the line is clipped.
</DD>
</DL>
<BR>
<BR>

<A NAME="36732"></A>
<B>:init</B> <EM>&amp;key (xcenter 100) (ycenter 100) (size 100)
(width 100) (height 100) </EM>[method]

<DL COMPACT>
<DT> 
<DD> makes a new viewport object.
</DD>
</DL>
<BR>
<BR>

<P>
             <P>

<H2><A NAME="SECTION03054000000000000000">
Viewer</A>
</H2>
To get a drawing  on a screen, four objects are needed:
(1) objects to be drawn, (2) a viewing which defines the viewin