--- ray/doc/man/man1/rcrop.1	2022/03/15 00:25:50	1.1
+++ ray/doc/man/man1/rcrop.1	2022/03/15 04:41:45	1.2
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rcrop.1,v 1.1 2022/03/15 00:25:50 greg Exp $"
+.\" RCSid "$Id: rcrop.1,v 1.2 2022/03/15 04:41:45 greg Exp $"
 .TH RCROP 1 3/14/2022 RADIANCE
 .SH NAME
 rcrop - crop RADIANCE matrix or picture
@@ -37,6 +37,15 @@ 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.
 .PP
+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).
+.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
@@ -60,4 +69,5 @@ rcrop 0 0 1000 1500 orig.hdr cropped.hdr
 .SH AUTHOR
 Greg Ward
 .SH "SEE ALSO"
-evalglare(1), pcompos(1), rcalc(1), rcollate(1), rfluxmtx(1), rmtxop(1)
+evalglare(1), pcompos(1), rcalc(1), rcode_depth(1),
+rcode_ident(1), rcode_norm(1), rcollate(1), rfluxmtx(1), rmtxop(1)