<!--Copyright (C) 1988-2005 by the Institute of Global Environment and Society (IGES). See file COPYRIGHT for more information.--> <H2><B>set arrowhead</B></H2><P> <code>set arrowhead <i>size</i></code><p> where <code><i>size</i></code> is the size of the arrowhead. The default is <code>0.05</code>. If set to <code>0</code>, no arrowhead is plotted. If set to a negative value, the size of the arrowhead will be scaled to the size of the arrow. The value specified will be the size when the arrow is one inch in length. <p> <H3>Usage Note</H3><P> <H3>Examples</H3><P>