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diff --git a/audio/jack_delay/README b/audio/jack_delay/README
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--- a/audio/jack_delay/README
+++ b/audio/jack_delay/README
@@ -1,3 +1,5 @@
+jack_delay (measure the latency of your sound card)
+
jack_delay is a small command line JACK app you can use to measure the
latency of your sound card. It uses a phase measurements on a set of
tones to measure the delay from the output to the input. Accuracy is
@@ -5,3 +7,9 @@ about 1/1000 of a sample.
Definitely read the docs in /usr/doc/jack_delay-$VERSION/README to
understand how to use this.
+
+This package uses POSIX filesystem capabilities to execute with
+elevated privileges (required for realtime audio processing). This
+may be considered a security/stability risk. Please read
+http://www.slackbuilds.org/caps/ for more information. To disable
+capabilities, pass SETCAP=no to the script.