--- doc/arrays-expr.texi.orig	2003-01-21 11:01:03 UTC
+++ doc/arrays-expr.texi
@@ -714,13 +714,8 @@ Computes the error function:  
 @tex
 $$ {\rm erf}(x) = {2\over\sqrt\pi}\int_{0}^{x} e^{-t^2} dt $$
 @end tex
-@html
-@erf(x) = 2/sqrt(Pi) * integral(exp(-t^2), t=0..x)
-@end html
 @ifnottex
-@ifnothtml
 @math{@r{erf}(x) = 2/@r{sqrt}(Pi) * @r{integral}(@r{exp}(-t^2), t=0..x)}
-@end ifnothtml
 @end ifnottex
 
 Note that for large values of the parameter, calculating can result in
