doc: improve description of chronyd -Q option

diff --git a/doc/chronyd.adoc b/doc/chronyd.adoc
index 7ba991d06a9edd7ee4f52dc3010624569cfa21bf..38c1526f2337e8671bd5fc4c11f7469d2db8f39e 100644 (file)
--- a/doc/chronyd.adoc
+++ b/doc/chronyd.adoc
@@ -88,8 +88,10 @@ will not detach from the terminal.
 
 *-Q*::
 This option is similar to the *-q* option, except it only prints the offset
-without making any corrections of the clock and it allows *chronyd* to be
-started without root privileges.
+without making any corrections of the clock and disables server ports to allow
+*chronyd* to be started without root privileges, assuming the configuration
+does not have any directives which would require them (e.g. *refclock*,
+*hwtimestamp*, *rtcfile*, etc).
 
 *-r*::
 This option will try to reload and then delete files containing sample