--- ray/doc/man/man1/rcollate.1	2013/09/05 18:50:30	1.2
+++ ray/doc/man/man1/rcollate.1	2013/09/18 21:24:36	1.4
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rcollate.1,v 1.2 2013/09/05 18:50:30 greg Exp $"
+.\" RCSid "$Id: rcollate.1,v 1.4 2013/09/18 21:24:36 greg Exp $"
 .TH RCOLLATE 1 7/8/97 RADIANCE
 .SH NAME
 rcollate - resize or transpose matrix data
@@ -7,6 +7,8 @@ rcollate - resize or transpose matrix data
 [
 .B \-h
 ][
+.B \-w
+][
 .B \-f[afdb][N]]
 ][
 .B \-t
@@ -32,6 +34,9 @@ By default, the file is assumed to include an informat
 is copied to the standard output along with the command name, but the
 .I \-h
 option may be used to turn this behavior off.
+The
+.I \-w
+option turns off non-fatal warning messages, such as unexpected EOD.
 .PP
 The input format is assumed to be ASCII, with three white-space separated words
 (typically numbers) in each record.
@@ -83,7 +88,7 @@ For large transpose operations on Unix systems, it is 
 to specify the input file on the command line, rather than reading
 from the standard input, since
 .I rcollate
-can map the file directly into memory.
+can map the file directly into virtual memory.
 .SH EXAMPLE
 To change put 8760 color triplets per row in a matrix with no header:
 .IP "" .2i