X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=doc%2Frrdcreate.pod;h=27ef702afd5097ca94e08e13c2b49cb01c3d0559;hb=a6d79528b4812e8eb3927dba3cdd42e6ca51b287;hp=036b10735393302a3aceb909cfae3c52b8ad54b0;hpb=10bc637368d636fc833ea2877b9210269e3448f5;p=rrdtool.git

diff --git a/doc/rrdcreate.pod b/doc/rrdcreate.pod
index 036b107..27ef702 100644
--- a/doc/rrdcreate.pod
+++ b/doc/rrdcreate.pod
@@ -180,7 +180,9 @@ B<RRA:>I<AVERAGE | MIN | MAX | LAST>B<:>I<xff>B<:>I<steps>B<:>I<rows>
 
 I<xff> The xfiles factor defines what part of a consolidation interval may
 be made up from I<*UNKNOWN*> data while the consolidated value is still
-regarded as known.
+regarded as known. It is given as the ratio of allowed I<*UNKNOWN*> PDPs
+to the number of PDPs in the interval. Thus, it ranges from 0 to 1 (exclusive).
+
 
 I<steps> defines how many of these I<primary data points> are used to build
 a I<consolidated data point> which then goes into the archive.
@@ -548,4 +550,4 @@ RPN expression handles the divide by zero case.
 
 =head1 AUTHOR
 
-Tobias Oetiker E<lt>oetiker@ee.ethz.chE<gt>
+Tobias Oetiker E<lt>tobi@oetiker.chE<gt>