--- ray/doc/man/man1/ev.1	2004/01/01 19:31:44	1.3
+++ ray/doc/man/man1/ev.1	2007/09/04 17:36:40	1.4
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: ev.1,v 1.3 2004/01/01 19:31:44 greg Exp $"
+.\" RCSid "$Id: ev.1,v 1.4 2007/09/04 17:36:40 greg Exp $"
 .TH EV 1 10/28/96 RADIANCE
 .SH NAME
 ev - evaluate expressions
@@ -60,7 +60,7 @@ trigonometric functions.
 inverse trigonometric functions.
 .TP
 .BR "atan2(y, x)"
-inverse tangent of y/x (range -pi to pi).
+inverse tangent of y/x (range \-pi to pi).
 .SH EXAMPLE
 To pass the square root of two and the sine of .5 to a program:
 .IP "" .2i