--- ray/doc/man/man1/rcode_ident.1	2021/04/28 19:15:09	1.5
+++ ray/doc/man/man1/rcode_ident.1	2022/08/24 19:34:07	1.7
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rcode_ident.1,v 1.5 2021/04/28 19:15:09 greg Exp $"
+.\" RCSid "$Id: rcode_ident.1,v 1.7 2022/08/24 19:34:07 greg Exp $"
 .TH RCODE_IDENT 1 7/19/2019 RADIANCE
 .SH NAME
 rcode_ident - store identifiers in an indexed map and retrieve from same
@@ -34,10 +34,8 @@ input.txt
 ][
 .B \-tS
 ]
-[
 input.idx
 [output.txt]
-]
 .SH DESCRIPTION
 .I Rcode_ident
 takes a list of ASCII identifiers on the input and encodes them
@@ -63,6 +61,9 @@ and the maximum ID length is 255 characters.
 .PP
 Input is taken from the first named file, or standard input if no
 files are given.
+(Input file is required for
+.I \-r
+option.)
 Output is sent to the second named file, or standard output if none.
 .PP
 The
@@ -84,6 +85,8 @@ The second form applies the
 .I \-r
 option to read an indexed id file and produce the original
 identifiers for each pixel position on the output.
+With this option, the ID file must be given on the
+command line and cannot be read from the standard input.
 The 
 .I \-h
 and
@@ -111,10 +114,6 @@ to produce an identifier for each integer input pair s
 the horizontal and vertical coordinates of a particular pixel,
 where x is measured from 0 on the left and y from 0 at the bottom
 in the standard orientation.
-Note that
-.I \-i
-implies that an indexed ID file is explicitly given on the command
-line, since the pixel coordinates are read from the standard input.
 If the
 .I \-u
 option is also given, output will be flushed after each identifier