[Info-mtools] mlabel -i switch not described in man page

[Rodrigo Osorio]

Hi,

I notice that the -i switch used by mlabel to define the image location
file or device is not described in the man page. It's far from perfect,
but see below my attempt to document this hidden switch.

Regards,
-- rodrigo

--- mlabel.1    2021-11-21 16:47:06.000000000 +0100
+++ mlabel.1    2021-12-02 00:05:41.151139000 +0100
@@ -23,7 +23,7 @@
 The \fR\&\f(CWmlabel\fR command adds a volume label to a disk. Its 
syntax is:
 .ft I
 .nf
-\&\fR\&\f(CWmlabel\fR [\fR\&\f(CW-vcsn\fR] [\fR\&\f(CW-N\fR 
\fIserial\fR] \fIdrive\fR:[\fInew_label\fR]
+\&\fR\&\f(CWmlabel\fR [\fR\&\f(CW-vcsn\fR] [\fR\&\f(CW-i\fR \fIfile\fR] 
[\fR\&\f(CW-N\fR \fIserial\fR] \fIdrive\fR:[\fInew_label\fR]
 .fi
 .ft R

@@ -55,6 +55,10 @@
 \&\fR\&\f(CWN\ \fIserial\fR\&\f(CW\fR\
 Sets the supplied serial number. The serial number should be supplied as
 an 8 digit hexadecimal number, without spaces
+.TP
+\&\fR\&\f(CWi\ \fIfile\fR\&\f(CW\fR\
+Sets the image file from the command line
+
 .PP
 .SH See\ Also
 Mtools' texinfo doc