--- ray/doc/man/man1/rcalc.1	2016/03/24 18:48:28	1.12
+++ ray/doc/man/man1/rcalc.1	2019/07/20 00:57:43	1.15
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rcalc.1,v 1.12 2016/03/24 18:48:28 greg Exp $"
+.\" RCSid "$Id: rcalc.1,v 1.15 2019/07/20 00:57:43 greg Exp $"
 .TH RCALC 1 4/6/99 RADIANCE
 .SH NAME
 rcalc - record calculator
@@ -255,7 +255,7 @@ are evaluated.
 This provides a convenient method for avoiding inappropriate calculations.
 The following library of pre-defined functions and variables is provided:
 .TP 10n
-.BR \$N
+.BR $N
 Return the value for input column
 .I N.
 If an input format is given, using a channel number generates an error.
@@ -285,6 +285,12 @@ is zero, the number of available arguments is returned
 .BR "rand(x)"
 compute a random number between 0 and 1 based on x.
 .TP
+.BR "min(a1, a2, ..)"
+return the minimum value from a list of arguments.
+.TP
+.BR "max(a1, a2, ..)"
+return the maximum value from a list of arguments.
+.TP
 .BR "floor(x)"
 return largest integer not greater than x.
 .TP
@@ -324,7 +330,7 @@ inverse tangent of y/x (range \-pi to pi).
 To print the square root of column two in column one,
 and column one times column three in column two:
 .IP "" .2i
-rcalc \-e '$1=sqrt($2);$2=$1*$3' inputfile > outputfile
+rcalc -e '$1=sqrt($2);$2=$1*$3' inputfile > outputfile
 .SH ENVIRONMENT
 RAYPATH		the directories to check for auxiliary files.
 .SH AUTHOR
@@ -336,4 +342,5 @@ options, not in definitions.
 .PP
 Tabs count as single spaces inside fields.
 .SH "SEE ALSO"
-cnt(1), ev(1), getinfo(1), icalc(1), rcollate(1), rlam(1), tabfunc(1), total(1)
+cnt(1), ev(1), getinfo(1), icalc(1), rcollate(1), rlam(1),
+rsplit(1), tabfunc(1), total(1)