--- ray/doc/man/man1/icalc.1	2004/01/01 19:31:45	1.1
+++ ray/doc/man/man1/icalc.1	2007/09/04 17:36:40	1.2
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: icalc.1,v 1.1 2004/01/01 19:31:45 greg Exp $"
+.\" RCSid "$Id: icalc.1,v 1.2 2007/09/04 17:36:40 greg Exp $"
 .TH ICALC 1 2/3/95 RADIANCE
 .SH NAME
 icalc - interactive calculator
@@ -128,7 +128,7 @@ 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 AUTHOR
 Greg Ward
 .SH "SEE ALSO"