erspective view.
Wider angle generates a skewed view, and narrower a flat view like
orthogonal (parallel) viewing.
<B>:view-angle</B> returns current or new view angle in radian.
</DD>
</DL>
<BR>
<BR>

<A NAME="36565"></A>
<B>:zoom</B> <EM>&amp;optional scale </EM>[method]

<DL COMPACT>
<DT> 
<DD> 
If <EM>scale</EM> is given, the screen is changed relatively to the
current size by <EM>scale</EM>
(the viewdistance is unchanged).
If you give 0.5 for <EM>scale</EM>, you get two times as wide view as before.
<B