'\"macro stdmacro
.if n .pH g4.pnch @(#)pnch	40.5 of 10/10/89
.\" Copyright 1989 AT&T
.nr X
.if \nX=0 .ds x} pnch 4 "" "\&"
.if \nX=1 .ds x} pnch 4 ""
.if \nX=2 .ds x} pnch 4 "" "\&"
.if \nX=3 .ds x} pnch "" "" "\&"
.TH \*(x}
.SH NAME
\f4pnch\f1 \- file format for card images
.SH DESCRIPTION
The
.SM PNCH
format is a convenient representation for
files consisting of card images in an arbitrary code.
.PP
A
.SM PNCH
file is a simple concatenation of card records.
A card record consists of a single control byte followed
by a variable number of data bytes.
The control byte specifies the number
(which must lie in the range 0\-80) of data bytes that
follow.
The data bytes are 8-bit codes that constitute
the card image.
If there are fewer than 80 data bytes, it is understood
that the remainder of the card image consists of trailing
blanks.
.\"	@(#)pnch.4	6.2 of 10/20/83
.Ee
