 plane.
Objects behind the back-clipping (yon) plane are clipped out.
</DD>
</DL>
<BR>
<BR>

<A NAME="36447"></A>
<B>:aspect</B> <EM>&amp;optional ratio </EM>[method]

<DL COMPACT>
<DT> 
<DD> 
Aspect ratio is the ratio between screen-y and screen-x.
If <EM>ratio</EM> is given,
the aspect ratio is changed by setting screen-y to screen-x * <EM>ratio</EM>.
<B>:aspect</B> returns the current aspect ratio.
</DD>
</DL>
<BR>
<BR>

<A NAME="36460"></A>
<PRE><TT>
<B>:init</B> <I>&amp;key :hither    100.0 [method]
<B