--- ray/doc/man/man1/rcrop.1	2022/03/16 00:06:08	1.4
+++ ray/doc/man/man1/rcrop.1	2023/12/12 16:31:45	1.8
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rcrop.1,v 1.4 2022/03/16 00:06:08 greg Exp $"
+.\" RCSid "$Id: rcrop.1,v 1.8 2023/12/12 16:31:45 greg Exp $"
 .TH RCROP 1 3/14/2022 RADIANCE
 .SH NAME
 rcrop - crop RADIANCE matrix or picture
@@ -46,22 +46,25 @@ and preserves the exposure in a way that is compatible
 However, one must remember that rows correspond to Y
 coordinates, and the orientation is reversed from a standard
 picture, where Y=0 is the bottom scanline.
+Spectral pictures, as might be produced by
+.I rtrace(1)
+or
+.I rfluxmtx(1),
+are also supported.
 .PP
+All matrix formats are supported, including text (ASCII), binary float
+and double.
 The
 .I rcrop
 tool also works on encoded normal vector files produced by
 .I rcode_norm(1)
 and encoded depth files produced by
 .I rcode_depth(1).
-However, it is not able to crop identifier files produced by
-.I rcode_ident(1).
+Data is copied verbatim, i.e., there is no internal conversion to
+another representation, although white space may change in text files.
 .PP
 If no input file is given, data will be taken from the standard input.
 If no output file is specified, data will be copied to the standard output.
-All matrix formats are supported, including text (ASCII), binary float
-and double.
-Data is copied verbatim, i.e., there is no internal conversion to
-another representation, although white space may change in text files.
 .SH EXAMPLES
 To crop a matrix down to 15 rows by 19 columns,
 starting at row 10 and column 12:
@@ -87,5 +90,5 @@ rmtxop -fa '!rcrop 15 0 1 0 mat1.mtx' '!rcrop 0 27 0 1
 .SH AUTHOR
 Greg Ward
 .SH "SEE ALSO"
-evalglare(1), pcompos(1), rcalc(1), rcode_depth(1), rcode_ident(1),
-rcode_norm(1), rcollate(1), rfluxmtx(1), rmtxop(1), rsplit(1)
+evalglare(1), pcompos(1), rcalc(1), rcode_depth(1), rcode_norm(1),
+rcollate(1), rcomb(1), rfluxmtx(1), rmtxop(1), rsplit(1), rtrace(1)