X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=doc%2Frrdgraph_graph.pod;h=754e703e3a19ddd58bf6e693411e9f925c546a4a;hb=ac2cd917b8b2c9a76824285c3d01050665d6b5c7;hp=2364f54cbbc2da00f55917a07a78f401f8ce9a8e;hpb=cb092381724e4ba8a1f18712fefc541a3d370f99;p=rrdtool.git

diff --git a/doc/rrdgraph_graph.pod b/doc/rrdgraph_graph.pod
index 2364f54..754e703 100644
--- a/doc/rrdgraph_graph.pod
+++ b/doc/rrdgraph_graph.pod
@@ -201,10 +201,11 @@ be filled.
 =item B<TICK>B<:>I<vname>B<#>I<rrggbb>[I<aa>][B<:>I<fraction>[B<:>I<legend>]]
 
 Plot a tick mark (a vertical line) for each value of I<vname> that is
-non-zero and not *UNKNOWN*. The I<fraction> argument specifies the
-length of the tick mark as a fraction of the y-axis; the default value
-is 0.1 (10% of the axis). Note that the color specification is not
-optional.
+non-zero and not *UNKNOWN*. The I<fraction> argument specifies the length of
+the tick mark as a fraction of the y-axis; the default value is 0.1 (10% of
+the axis). Note that the color specification is not optional. The TICK marks normaly
+start at the lower edge of the graphing area. If the fraction is negative they start
+at the upper border of the graphing area.
 
 =item B<SHIFT>B<:>I<vname>B<:>I<offset>