From 662b392ffcd5fbad21607d814e3e9e4f39393c54 Mon Sep 17 00:00:00 2001
From: fvogel <fvogelnew1@free.fr>
Date: Tue, 1 May 2018 10:15:20 +0000
Subject: Document -command macOS-specific option of tk_messageBox

---
 doc/messageBox.n | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/messageBox.n b/doc/messageBox.n
index 5ce1745..6bcbc09 100644
--- a/doc/messageBox.n
+++ b/doc/messageBox.n
@@ -24,6 +24,12 @@ buttons. Then it returns the symbolic name of the selected button.
 .PP
 The following option-value pairs are supported:
 .TP
+\fB\-command\fR \fIstring\fR
+Specifies the prefix of a Tcl command to invoke when the user closes the
+dialog. The actual command consists of \fIstring\fR followed by a space
+and the name of the button clicked by the user to close the dialog. This
+is only available on Mac OS X.
+.TP
 \fB\-default\fR \fIname\fR
 .
 \fIName\fR gives the symbolic name of the default button for
-- 
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