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+\
+.\" This man page was generated by the Netpbm tool 'makeman' from HTML source.
+.\" Do not hand-hack it! If you have bug fixes or improvements, please find
+.\" the corresponding HTML page on the Netpbm website, generate a patch
+.\" against that, and send it to the Netpbm maintainer.
+.TH "Pamcut User Manual" 0 "04 October 2019" "netpbm documentation"
+
+.SH NAME
+pamcut - cut a rectangle out of a PAM, PBM, PGM, or PPM image
+
+.UN synopsis
+.SH SYNOPSIS
+
+\fBpamcut\fP
+
+[\fB-left \fP\fIcolnum\fP]
+
+[\fB-right \fP\fIcolnum\fP]
+
+[\fB-top \fP\fIrownum\fP]
+
+[\fB-bottom \fP\fIrownum\fP]
+
+[\fB-width \fP\fIcols\fP]
+
+[\fB-height \fP\fIrows\fP]
+
+[\fB-pad\fP]
+
+[\fB-cropleft \fP\fInumcols\fP]
+
+[\fB-cropright \fP\fInumcols\fP]
+
+[\fB-croptop \fP\fInumrows\fP]
+
+[\fB-cropbottom \fP\fInumrows\fP]
+
+[\fB-verbose\fP]
+
+[\fIleft\fP \fItop\fP \fIwidth\fP \fIheight\fP]
+
+[\fIpnmfile\fP]
+.PP
+Minimum unique abbreviations of option are acceptable. You may use
+double hyphens instead of single hyphen to denote options. You may use
+white space in place of the equals sign to separate an option name
+from its value.
+
+.UN description
+.SH DESCRIPTION
+.PP
+This program is part of
+.BR "Netpbm" (1)\c
+\&.
+.PP
+\fBpamcut\fP reads a PAM, PBM, PGM, or PPM image as input and
+extracts the specified rectangle, and produces the same kind of image
+as output.
+.PP
+You can specify either the rectangle to cut out and keep or specify the
+edges to crop off and discard, or a combination.
+.PP
+To request edges be cropped off, use options \fB-cropleft\fP,
+\fB-cropright\fP, \fB-croptop\fP, and \fB-cropbottom\fP to indicate how many
+rows or columns to discard.
+.PP
+For example, \fB-cropleft=50 -cropright=200\fP means to discard the
+leftmost 50 and rightmost 200 columns.
+.PP
+To specify the rectangle to keep, use \fB-left\fP, \fB-right\fP,
+\fB-top\fP, \fB-bottom\fP, \fB-width\fP, \fB-height\fP, and \fB-pad\fP
+options.
+.PP
+For example, \fB-left=50 -right=200\fP means to keep the 150 columns
+between Columns 50 and 200 inclusive.
+.PP
+You can code any mixture of the options. What you don't specify defaults.
+Those defaults are in favor of minimal cutting and in favor of cutting the
+right and bottom edges off. It is an error to overspecify, i.e. to specify
+all three of \fB-left\fP, \fB-right\fP, and \fB-width\fP or \fB-top\fP,
+\fB-bottom\fP, and \fB-height\fP or \fBright\fP as well as
+\fB-cropright\fP.
+.PP
+There is an older way to specify the rectangle to keep: positional
+arguments. Arguments were the only way available before July 2000, but you
+should not use them in new applications. Options are easier to remember and
+read, more expressive, and allow you to use defaults.
+.PP
+If you use both options and arguments, the two specifications get
+mixed in an unspecified way.
+.PP
+To use arguments, specify all four of the \fIleft\fP, \fItop\fP,
+\fIwidth\fP, and \fIheight\fP arguments. \fIleft\fP and \fItop\fP have
+the same effect as specifying them as the argument of a \fB-left\fP or
+\fB-top\fP option, respectively. \fIwidth\fP and \fIheight\fP have the
+same effect as specifying them as the argument of a \fB-width\fP or
+\fB-height\fP option, respectively, where they are positive. Where they are
+not positive, they have the same effect as specifying one less than the value
+as the argument to a \fB-right\fP or \fB-bottom\fP option, respectively.
+(E.g. \fIwidth\fP = 0 makes the cut go all the way to the right edge).
+Before July 2000, negative numbers were not allowed for \fIwidth\fP and
+\fIheight\fP.
+.PP
+Input is from Standard Input if you don't specify the input file
+\fIpnmfile\fP.
+.PP
+Output is to Standard Output.
+.PP
+\fBpamcut\fP works on a multi-image stream. It cuts each image in the
+stream independently and produces a multi-image stream output. Before
+Netpbm 10.32 (March 2006), it ignored all but the first image in the stream.
+.PP
+If you are splitting a single image into multiple same-size images,
+\fBpamdice\fP is faster and easier than running \fBpamcut\fP
+multiple times.
+.PP
+\fBpamcomp\fP is also useful for cutting and padding an image to a
+certain size. You create a background image of the desired frame
+dimensions and overlay the subject image on it.
+
+.UN options
+.SH OPTIONS
+.PP
+In addition to the options common to all programs based on libnetpbm
+(most notably \fB-quiet\fP, see
+.UR index.html#commonoptions
+ Common Options
+.UE
+\&), \fBpamcut\fP recognizes the following
+command line options:
+
+
+.TP
+\fB-left=\fP\fIcolnum\fP
+The column number of the leftmost column to be in the output.
+Columns left of this get cut out. If a nonnegative number, it refers
+to columns numbered from 0 at the left, increasing to the right. If
+negative, it refers to columns numbered -1 at the right, decreasing to
+the left.
+
+.TP
+\fB-right=\fP\fIcolnum\fP
+The column number of the rightmost column to be in the output,
+numbered the same as for \fB-left.\fP Columns to the right of this
+get cut out.
+
+.TP
+\fB-top=\fP\fIrownum\fP
+The row number of the topmost row to be in the output. Rows above
+this get cut out. If a nonnegative number it refers to rows numbered
+from 0 at the top, increasing downward. If negative, it refers to
+columns numbered -1 at the bottom, decreasing upward.
+
+.TP
+\fB-bottom=\fP\fIrownum\fP
+The row number of the bottom-most row to be in the output,
+numbered the same as for \fB-top\fP. Rows below this get cut out.
+
+.TP
+\fB-width=\fP\fIcols\fP
+The number of columns to be in the output. Must be positive.
+
+.TP
+\fB-height=\fP\fIrows\fP
+The number of rows to be in the output. Must be positive.
+
+.TP
+\fB-cropleft\fP
+.TP
+\fB-cropright\fP
+.TP
+\fB-croptop\fP
+.TP
+\fB-cropbottom\fP
+These options tell how many rows or columns to crop from the left,
+right, top, or bottom edges, respectively.
+.sp
+The value must not be negative.
+.sp
+These option were new in Netpbm 10.85 (December 2018). Before that, you
+can achieve the same thing with \fB-left\fP, \fBtop\fP, and negative values
+for \fB-right\fP and \fB-bottom\fP. Remember to subtract one in the latter
+case; e.g. the equivalent of \fB-cropright=1\fP is \fB-right=-2\fP.
+
+.TP
+\fB-pad\fP
+If the rectangle you specify is not entirely within the input
+image, \fBpamcut\fP fails unless you also specify \fB-pad\fP. In
+that case, it pads the output with black up to the edges you specify.
+You can use this option if you need to have an image of certain
+dimensions and have an image of arbitrary dimensions.
+.sp
+\fBpnmpad\fP also adds borders to an image, but you specify their
+width directly.
+.sp
+\fBpamcomp\fP does a more general form of this padding. Create a
+background image of the frame dimensions and overlay the subject image
+on it. You can use options to have the subject image in the center of
+the frame or against any edge and make the padding any color (the padding
+color is the color of the background image).
+
+.TP
+\fB-verbose\fP
+Print information about the processing to Standard Error.
+
+
+.UN seealso
+.SH SEE ALSO
+.BR "pnmcrop" (1)\c
+\&,
+.BR "pamdice" (1)\c
+\&,
+.BR "pamcomp" (1)\c
+\&,
+.BR "pnmpad" (1)\c
+\&,
+.BR "pamcat" (1)\c
+\&,
+.BR "pgmslice" (1)\c
+\&,
+.BR "pnm" (1)\c
+\&
+
+.UN history
+.SH HISTORY
+.PP
+\fBpamcut\fP was derived from \fBpnmcut\fP in Netpbm 9.20 (May 2001).
+It was the first Netpbm program adapted to the new PAM format and programming
+library.
+.PP
+The predecessor \fBpnmcut\fP was one of the oldest tools in the Netpbm
+package.
+
+
+.UN author
+.SH AUTHOR
+
+Copyright (C) 1989 by Jef Poskanzer.
+.SH DOCUMENT SOURCE
+This manual page was generated by the Netpbm tool 'makeman' from HTML
+source. The master documentation is at
+.IP
+.B http://netpbm.sourceforge.net/doc/pamcut.html
+.PP \ No newline at end of file