--- ray/doc/man/man1/rpict.1	2018/03/20 02:40:38	1.23
+++ ray/doc/man/man1/rpict.1	2019/06/09 17:48:13	1.25
@@ -1,4 +1,4 @@
-.\" RCSid "$Id: rpict.1,v 1.23 2018/03/20 02:40:38 greg Exp $"
+.\" RCSid "$Id: rpict.1,v 1.25 2019/06/09 17:48:13 rschregle Exp $"
 .TH RPICT 1 2/26/99 RADIANCE
 .SH NAME
 rpict - generate a RADIANCE picture
@@ -595,14 +595,10 @@ mapping, taking into account the pagesize specified by
 .I \-ac. 
 Note that this is approximate as the number of cache pages is rounded to
 the nearest prime. This allows adapting the cache to the available physical
-memory. In conjunction with the
-.I \-n
-option, this is the cache size
-.I per parallel process. 
-Cache performance is less sensitive to this parameter,
-and reasonable performance can obtained with as few as 10k photons. The
-default is 1M. This option recognises multiplier suffixes (k = 1e3, M =
-1e6), both in upper and lower case.
+memory. Cache performance is less sensitive to this parameter, and reasonable 
+performance can obtained with as few as 10k photons. The default is 1M. This 
+option recognises multiplier suffixes (k = 1e3, M = 1e6), both in upper and 
+lower case.
 .TP
 .BI -me " rext gext bext"
 Set the global medium extinction coefficient to the indicated color,
@@ -666,8 +662,8 @@ is zero, then Russian roulette is used for ray
 termination, and the
 .I -lw
 setting (below) must be positive.
-If N is a negative integer, then this sets the upper limit
-of reflections past which Russian roulette will be used.
+If N is a negative integer, then this limits the maximum
+number of reflections even with Russian roulette.
 In scenes with dielectrics and total internal reflection,
 a setting of 0 (no limit) may cause a stack overflow.
 .TP