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-rw-r--r--usr.bin/at/at.man14
1 files changed, 14 insertions, 0 deletions
diff --git a/usr.bin/at/at.man b/usr.bin/at/at.man
index a972af9..aa19b14 100644
--- a/usr.bin/at/at.man
+++ b/usr.bin/at/at.man
@@ -186,6 +186,20 @@ to use
If neither exists, only the superuser is allowed use of
.Nm Ns .
This is the default configuration.
+.Sh IMPLEMENTATION NOTES
+Note that
+.Nm
+is implemented through the
+.Xr cron 8
+daemon by calling
+.Xr atrun 8
+every five minutes.
+This implies that the granularity of
+.Nm
+might not be optimal for every deployment.
+If a finer granularity is needed the system crontab at
+.Pa /etc/crontab
+needs to be changed.
.Sh OPTIONS
.Bl -tag -width indent
.It Fl q Ar queue
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