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<A NAME=DFPRINT>

<TITLE>DFPRINT</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>DFPRINT</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>switch</B><P>
<P>
 
 <P>
<P>
When <em>dfprint</em> is on, expressions in the differentiation operator 

<A HREF=r37_0148.html>df</A> are printed in a more ``natural'' notation, with th
e 
differentiation variables appearing as subscripts. In addition, if the 
switch 
<A HREF=r37_0310.html>noarg</A> is on (the default), the arguments of the 
differentiated operator are suppressed. 
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>
operator f; 

df(f x,x); 

  DF(F(X),X); 


on dfprint; 

ws; 

  F  
   X


df(f(x,y),x,y); 

  F  
   Y


off noarg; 

ws; 

  F(X,Y)
        X

</TT></PRE><P>