doc: improve maxdistance description

diff --git a/chrony.texi.in b/chrony.texi.in
index c9b7e43a7eac8d7fb2b1cb8662755ef4d250e0cc..25eb23d499078720b296b6fd4fb042e9318a5ebd 100644 (file)
--- a/chrony.texi.in
+++ b/chrony.texi.in
@@ -2394,7 +2394,11 @@ includes the accumulated dispersion, which may be large when the source is no
 longer synchronised, and half of the total round-trip delay to the primary
 source.
 
-By default, the maximum distance is 3 seconds.
+By default, the maximum root distance is 3 seconds.
+
+Setting @code{maxdistance} to a larger value can be useful to allow
+synchronisation with a server that only has a very infrequent connection to its
+sources and can accumulate a large dispersion between updates of its clock.
 
 The syntax is