Add a CONFORMING TO section to clunk(8).

diff --git a/clunk.8 b/clunk.8
index b2db3775d5825c293821637e560f4f79481c9d9b..d455dc41f836a6e3c834f738e79559ece216dae3 100644 (file)
--- a/clunk.8
+++ b/clunk.8
@@ -78,12 +78,26 @@ cannot be used with
 .Fl L ,
 or
 .Fl G .
+.Nm
+can correctly handle changes to the system clock, and the start and
+end of summer time.
 .Sh EXAMPLES
-Use GPIO line 17 on a Raspberry Pi, saving state to
+Use GPIO line\ 17 on a Raspberry Pi, saving state to
 .Pa /var/lib/clunk.state .
 The clock shows ten to two:
 .Pp
 .Dl clunk -C pinctrl-bcm2835 -L 17 -f /var/lib/clunk.state -s 1:50:00
+.Sh CONFORMING TO
+The pulses emitted by
+.Nm
+conform to Post Office specification PR\ 479\ C,
+.%B Specification for Clock No.\ 36 (Mark\ 6) (Clock, Electric Master and Controlling).
+.Pp
+The behaviour of
+.Nm
+at the start and end of summer time conforms to Issue\ 7 of Post Office
+Engineering Instruction B\ 5301,
+.%B Electrical Clocks \(em Pulse Type: Maintenance.
 .Sh AUTHORS
 .Nm
 was written by