> Creates a disk file with
  filename <tt>a</tt> in the current default directory, of variables
  (e.g. labels) <tt>bi</tt>.  The file is in a text format and is not
  reloadable into Maxima. However the strungout expressions can be
  incorporated into a Fortran, Basic or C program with a minimum of
  editing.</dd>
 <dt><b><tt>subst(a,b,c)</tt></b></dt>
	<dd> Substitutes <tt>a</tt> for <tt>b</tt> in <tt>c</tt>.</dd>
 <dt><b><tt>taylor(a,b,c,d)</tt></b></dt>
	<dd> Expands <tt>a</tt> in a Taylor series in
  <