sadf: Update manual page

Explain new bwcol option.

Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>

diff --git a/man/sadf.in b/man/sadf.in
index 44ac4b274a211d52f233cc922fd251d0835ca932..c11cefeb26a7a58d4e1b0d2d85745d59949fab17 100644 (file)
--- a/man/sadf.in
+++ b/man/sadf.in
@@ -191,6 +191,11 @@ view, some with only very small values, and others with high ones,
 the latter making the former hardly visible.
 .RE
 
+.B bwcol
+.RS
+Use a black and white palette to draw the graphs.
+.RE
+
 .B customcol
 .RS
 Use a customizable color palette instead of the default one to draw