Parameters
At the moment there are three parameters that can be changed. They
are
\nodemargin - A node's height and width are defined as
the height plus depth and width of an hbox enclosing the object plus the
nodemargin on each side. The default is 2pt.
\treelinewidth - The width of the lines. The default is .3pt.
\dashlength - The length of the dash, if you are using
dashed lines. The default is 0pt (solid line).1
\arrowwidth - the width of the arrowhead in the
\anodeconnect and \anodecurve commands. Default is
4 pt.
\arrowlength - the length of the arrowhead. Default is
4pt.
