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.\"	@(#)bcd.6	8.1 (Berkeley) 5/31/93
.\"
.Dd $Mdocdate: August 14 2013 $
.Dt BCD 6
.Os
.Sh NAME
.Nm bcd ,
.Nm ppt ,
.Nm morse
.Nd reformat input as punch cards, paper tape or morse code
.Sh SYNOPSIS
.Nm bcd
.Op Ar string ...
.Nm ppt
.Oo
.Fl d Oo Fl b Oc \*(Ba
.Ar string ...
.Oc
.Nm morse
.Op Fl d | s
.Op Ar string ...
.Sh DESCRIPTION
The
.Nm bcd ,
.Nm ppt ,
and
.Nm morse
commands read the given input and reformat it in the form of
punched cards, paper tape, or morse code, respectively.
Acceptable input are command line arguments or the standard input.
.Pp
Available options for
.Nm ppt :
.Bl -tag -width Ds
.It Fl d Op Fl b
The
.Fl d
option for
.Nm ppt
decodes paper tape on the standard input back to ASCII.
Unprintable characters are visually encoded with
.Xr vis 3
unless the
.Fl b
flag (binary) is also specified.
A lowercase
.Sq x
is printed for undecipherable input lines.
.El
.Pp
Available options for
.Nm morse :
.Bl -tag -width Ds
.It Fl d
The
.Fl d
option for
.Nm morse
decodes dot-dash morse
.Po
as generated by using the
.Fl s
option
.Pc
back into text.
A lowercase
.Sq x
is printed for undecipherable input; otherwise, text is returned uppercase.
If the morse to be translated is given on the command line, it should be
preceded by
.Sq --
to keep it from being mistaken for options.
.It Fl s
The
.Fl s
option for
.Nm morse
produces dots and dashes rather than words.
.El
.Sh SEE ALSO
.Rs
.%I ISO 1681:1973
.%R "Information processing--Unpunched paper cards--Specification"
.Re
.Rs
.%I ISO 1682:1973
.%R "Information processing--80 columns punched paper cards--Dimensions and location of rectangular punched holes"
.Re
.Rs
.%I ECMA-10
.%R "ECMA Standard for Data Interchange on Punched Tape"
.Re
.Rs
.%I ITU-T Recommendation F.1
.%R "Operational provisions for the international public telegram service"
.%O Division B, I. Morse code
.Re