+\fBsend2-hook\fP [\fB!\fP]\fIpattern\fP \fIcommand\fP
+Whenever a message matching \fIpattern\fP is changed (either by
+editing it or by using the compose menu), \fIcommand\fP
+is executed. When multiple \fBsend2-hook\fPs match, they are
+executed in the order in which they occur in the configuration file.
+Possible applications include setting the $sendmail variable when a
+message's from header is changed.
+.IP
+\fBsend2-hook\fP execution is not triggered by use of
+\fBenter-command\fP from the compose menu.
+.TP
+\fBreply-hook\fP [\fB!\fP]\fIpattern\fP \fIcommand\fP
+When replying to a message matching \fIpattern\fP, \fIcommand\fP is
+executed. When multiple \fBreply-hook\fPs match, they are executed
+in the order in which they occur in the configuration file, but all
+\fBreply-hook\fPs are matched and executed before \fBsend-hook\fPs,
+regardless of their order in the configuration file.
+.TP