From 8285a5c49c2eb67dafbae19230a28b6d85e44a0c Mon Sep 17 00:00:00 2001
From: Laurent Rineau <Laurent.Rineau__CGAL@normalesup.org>
Date: Wed, 10 Jan 2007 23:32:16 +0000
Subject: [PATCH] A Plan_3 is degenerate iff a = b = c *and* c = 0.

---
 Kernel_23/doc_tex/Kernel_23_ref/Plane_3.tex | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Kernel_23/doc_tex/Kernel_23_ref/Plane_3.tex b/Kernel_23/doc_tex/Kernel_23_ref/Plane_3.tex
index c03a2008824..7f358c12505 100644
--- a/Kernel_23/doc_tex/Kernel_23_ref/Plane_3.tex
+++ b/Kernel_23/doc_tex/Kernel_23_ref/Plane_3.tex
@@ -35,7 +35,8 @@ positive side of \ccStyle{h}, iff \ccTexHtml{$a\, px +b\, py +c\, pz +
                        const Kernel::RT &d)}
 {creates a plane \ccVar\ defined by the equation
  \ccTexHtml{$a\, px +b\, py +c\, pz + d = 0$}{a px + b py + c pz + d = 0}.
-Notice that \ccVar\ is degenerate if \ccTexHtml{$a = b = c$}{a = b = c}.}
+Notice that \ccVar\ is degenerate if 
+ \ccTexHtml{$a = b = c = 0$}{a = b = c = 0}.}
 
 \ccConstructor{Plane_3(const Point_3<Kernel> &p,
                        const Point_3<Kernel> &q,