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-rw-r--r--usr.bin/biff/biff.113
1 files changed, 9 insertions, 4 deletions
diff --git a/usr.bin/biff/biff.1 b/usr.bin/biff/biff.1
index c19a0b1..49d711d 100644
--- a/usr.bin/biff/biff.1
+++ b/usr.bin/biff/biff.1
@@ -40,7 +40,7 @@
.Nd "be notified if mail arrives and who it is from"
.Sh SYNOPSIS
.Nm
-.Op Cm n | y
+.Op Cm n | y | b
.Sh DESCRIPTION
The
.Nm
@@ -52,11 +52,13 @@ The following options are available:
.It Cm n
Disable notification.
.It Cm y
-Enable notification.
+Enable header notification.
+.It Cm b
+Enable bell notification.
.El
.Pp
-When mail notification is enabled, the header and first few lines of
-the message will be printed on your screen whenever mail arrives.
+When header notification is enabled, the header and first few lines of
+the message will be printed on your terminal whenever mail arrives.
A
.Dq Li biff y
command is often included in the file
@@ -65,6 +67,9 @@ or
.Pa \&.profile
to be executed at each login.
.Pp
+When bell notification is enabled, only two bell characters (ASCII \\007)
+will be printed on your terminal whenever mail arrives.
+.Pp
The
.Nm
utility operates asynchronously.
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