1 files changed, 13 insertions, 0 deletions
diff --git a/radharc.1 b/radharc.1
index 941f82d..df9fb8d 100644
--- a/radharc.1
+++ b/radharc.1
@@ -160,6 +160,19 @@ Remove the currently applied filter.
 .SH OPERANDS
 No operands are supported.
 
+.SH SIGNALS
+The following signals have non-default meaning:
+.TP
+.B SIGINT
+Gradually fade out the effect and terminate the process.
+
+If the fade out time is 0 (default) or if the signal is
+sent twice, the effect is removed immediately.
+.TP
+.B SIGHUP
+Terminate the process after any current fade in or fade
+out action, but leaf the effect in place.
+
 .SH SEE ALSO
 .BR coopgammad (1),
 .BR cg-tools (7),