man/mann/pack-old.n - toolchains/skids - Git at Google

 '\"
 '\" Copyright (c) 1990-1994 The Regents of the University of California.
 '\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\"
 '\" RCS: @(#) $Id: pack-old.n,v 1.2 1998/09/14 18:22:58 stanton Exp $
 '\"
 '\" The definitions below are for supplemental macros used in Tcl/Tk
 '\" manual entries.
 '\"
 '\" .AP type name in/out ?indent?
 '\"	Start paragraph describing an argument to a library procedure.
 '\"	type is type of argument (int, etc.), in/out is either "in", "out",
 '\"	or "in/out" to describe whether procedure reads or modifies arg,
 '\"	and indent is equivalent to second arg of .IP (shouldn't ever be
 '\"	needed;  use .AS below instead)
 '\"
 '\" .AS ?type? ?name?
 '\"	Give maximum sizes of arguments for setting tab stops.  Type and
 '\"	name are examples of largest possible arguments that will be passed
 '\"	to .AP later.  If args are omitted, default tab stops are used.
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 '\"	Begin vertical sidebar, for use in marking newly-changed parts
 '\"	of man pages.  The first argument is ignored and used for recording
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 '\"
 '\" .SO
 '\"	Start of list of standard options for a Tk widget.  The
 '\"	options follow on successive lines, in four columns separated
 '\"	by tabs.
 '\"
 '\" .SE
 '\"	End of list of standard options for a Tk widget.
 '\"
 '\" .OP cmdName dbName dbClass
 '\"	Start of description of a specific option.  cmdName gives the
 '\"	option's name as specified in the class command, dbName gives
 '\"	the option's name in the option database, and dbClass gives
 '\"	the option's class in the option database.
 '\"
 '\" .UL arg1 arg2
 '\"	Print arg1 underlined, then print arg2 normally.
 '\"
 '\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
 '\"
 '\"	# Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
 .if t .wh -1.3i ^B
 .nr ^l \n(.l
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 '\"	# Start an argument description
 .de AP
 .ie !"\\$4"" .TP \\$4
 .el \{\
 .   ie !"\\$2"" .TP \\n()Cu
 .   el          .TP 15
 .\}
 .ta \\n()Au \\n()Bu
 .ie !"\\$3"" \{\
 \&\\$1	\\fI\\$2\\fP	(\\$3)
 .\".b
 .\}
 .el \{\
 .br
 .ie !"\\$2"" \{\
 \&\\$1	\\fI\\$2\\fP
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 \&\\fI\\$1\\fP
 .\}
 .\}
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 .nr )C \\n()Bu+\\w'(in/out)'u+2n
 ..
 .AS Tcl_Interp Tcl_CreateInterp in/out
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 \h'-1.5n'\L'|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'|0u-1.5n\(ul'
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 .\}
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 .LP
 See the \\fBoptions\\fR manual entry for details on the standard options.
 ..
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 .de OP
 .LP
 .nf
 .ta 4c
 Command-Line Name:	\\fB\\$1\\fR
 Database Name:	\\fB\\$2\\fR
 Database Class:	\\fB\\$3\\fR
 .fi
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 \\$1\l'|0\(ul'\\$2
 ..
 .TH pack-old n 4.0 Tk "Tk Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
 pack \- Obsolete syntax for packer geometry manager
 .SH SYNOPSIS
 \fBpack after \fIsibling \fIwindow options\fR ?\fIwindow options \fR...?
 .sp
 \fBpack append \fIparent \fIwindow options\fR ?\fIwindow options \fR...?
 .sp
 \fBpack before \fIsibling \fIwindow options\fR ?\fIwindow options \fR...?
 .sp
 \fBpack unpack \fIwindow\fR
 .BE

 .SH DESCRIPTION
 .PP
 \fINote: this manual entry describes the syntax for the \fBpack\fI
 command as it existed before Tk version 3.3.
 Although this syntax continues to be supported for backward
 compatibility, it is obsolete and should not be used anymore.
 At some point in the future it may cease to be supported.\fR
 .PP
 The packer is a geometry manager that arranges the
 children of a parent by packing them in order around the edges of
 the parent.  The first child is placed against one side of
 the window, occupying the entire span of the window along that
 side.  This reduces the space remaining for other children as
 if the side had been moved in by the size of the first child.
 Then the next child is placed against one side of the remaining
 cavity, and so on until all children have been placed or there
 is no space left in the cavity.
 .PP
 The \fBbefore\fR, \fBafter\fR, and \fBappend\fR forms of the \fBpack\fR
 command are used to insert one or more children into the packing order
 for their parent.  The \fBbefore\fR form inserts the children before
 window \fIsibling\fR in the order;  all of the other windows must be
 siblings of \fIsibling\fR.  The \fBafter\fR form inserts the windows
 after \fIsibling\fR, and the \fBappend\fR form appends one or more
 windows to the end of the packing order for \fIparent\fR.  If a
 \fIwindow\fR named in any of these commands is already packed in
 its parent, it is removed from its current position in the packing
 order and repositioned as indicated by the command.  All of these
 commands return an empty string as result.
 .PP
 The \fBunpack\fR form of the \fBpack\fR command removes \fIwindow\fR
 from the packing order of its parent and unmaps it.  After the
 execution of this command the packer will no longer manage
 \fIwindow\fR's geometry.
 .PP
 The placement of each child is actually a four-step process;
 the \fIoptions\fR argument following each \fIwindow\fR consists of
 a list of one or more fields that govern the placement of that
 window.  In the discussion below, the term \fIcavity\fR refers
 to the space left in a parent when a particular child is placed
 (i.e. all the space that wasn't claimed by earlier children in
 the packing order).  The term \fIparcel\fR refers to the space
 allocated to a particular child;  this is not necessarily the
 same as the child window's final geometry.
 .PP
 The first step in placing a child is to determine which side of
 the cavity it will lie against.  Any one of the following options
 may be used to specify a side:
 .TP
 \fBtop\fR
 Position the child's parcel against the top of the cavity,
 occupying the full width of the cavity.
 .TP
 \fBbottom\fR
 Position the child's parcel against the bottom of the cavity,
 occupying the full width of the cavity.
 .TP
 \fBleft\fR
 Position the child's parcel against the left side of the cavity,
 occupying the full height of the cavity.
 .TP
 \fBright\fR
 Position the child's parcel against the right side of the cavity,
 occupying the full height of the cavity.
 .LP
 At most one of these options should be specified for any given window.
 If no side is specified, then the default is \fBtop\fR.
 .PP
 The second step is to decide on a parcel for the child.  For \fBtop\fR
 and \fBbottom\fR windows, the desired parcel width is normally the cavity
 width and the desired parcel height is the window's requested height,
 as passed to \fBTk_GeometryRequest\fR. For \fBleft\fR and \fBright\fR
 windows, the desired parcel height is normally the cavity height and the
 desired width is the window's requested width.  However, extra
 space may be requested for the window using any of the following
 options:
 .TP 12
 \fBpadx \fInum\fR
 Add \fInum\fR pixels to the window's requested width before computing
 the parcel size as described above.
 .TP 12
 \fBpady \fInum\fR
 Add \fInum\fR pixels to the window's requested height before computing
 the parcel size as described above.
 .TP 12
 \fBexpand\fR
 This option requests that the window's parcel absorb any extra space left over
 in the parent's cavity after packing all the children.
 The amount of space left over depends on the sizes requested by the
 other children, and may be zero.  If several windows have all specified
 \fBexpand\fR then the extra width will be divided equally among all the
 \fBleft\fR and \fBright\fR windows that specified \fBexpand\fR and
 the extra height will be divided equally among all the \fBtop\fR and
 \fBbottom\fR windows that specified \fBexpand\fR.
 .LP
 If the desired width or height for a parcel is larger than the corresponding
 dimension of the cavity, then the cavity's dimension is used instead.
 .PP
 The third step in placing the window is to decide on the window's
 width and height.  The default is for the window to receive either
 its requested width and height or the those of the parcel, whichever
 is smaller.  If the parcel is larger than the window's requested
 size, then the following options may be used to expand the
 window to partially or completely fill the parcel:
 .TP
 \fBfill\fR
 Set the window's size to equal the parcel size.
 .TP
 \fBfillx\fR
 Increase the window's width to equal the parcel's width, but retain
 the window's requested height.
 .TP
 \fBfilly\fR
 Increase the window's height to equal the parcel's height, but retain
 the window's requested width.
 .PP
 The last step is to decide the window's location within its parcel.
 If the window's size equals the parcel's size, then the window simply
 fills the entire parcel.  If the parcel is larger than the window,
 then one of
 the following options may be used to specify where the window should
 be positioned within its parcel:
 .TP 15
 \fBframe center\fR
 Center the window in its parcel.  This is the default if no framing
 option is specified.
 .TP 15
 \fBframe n\fR
 Position the window with its top edge centered on the top edge of
 the parcel.
 .TP 15
 \fBframe ne\fR
 Position the window with its upper-right corner at the upper-right corner
 of the parcel.
 .TP 15
 \fBframe e\fR
 Position the window with its right edge centered on the right edge of
 the parcel.
 .TP 15
 \fBframe se\fR
 Position the window with its lower-right corner at the lower-right corner
 of the parcel.
 .TP 15
 \fBframe s\fR
 Position the window with its bottom edge centered on the bottom edge of
 the parcel.
 .TP 15
 \fBframe sw\fR
 Position the window with its lower-left corner at the lower-left corner
 of the parcel.
 .TP 15
 \fBframe w\fR
 Position the window with its left edge centered on the left edge of
 the parcel.
 .TP 15
 \fBframe nw\fR
 Position the window with its upper-left corner at the upper-left corner
 of the parcel.
 .PP
 The packer manages the mapped/unmapped state of all the packed
 children windows.  It automatically maps the windows when it packs
 them, and it unmaps any windows for which there was no space left
 in the cavity.
 .PP
 The packer makes geometry requests on behalf of the parent windows
 it manages.  For each parent window it requests a size large enough
 to accommodate all the options specified by all the packed children,
 such that zero space would be leftover for \fBexpand\fR options.

 .SH KEYWORDS
 geometry manager, location, packer, parcel, size
	'\"
	'\" Copyright (c) 1990-1994 The Regents of the University of California.
	'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
	'\"
	'\" See the file "license.terms" for information on usage and redistribution
	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	'\"
	'\" RCS: @(#) $Id: pack-old.n,v 1.2 1998/09/14 18:22:58 stanton Exp $
	'\"
	'\" The definitions below are for supplemental macros used in Tcl/Tk
	'\" manual entries.
	'\"
	'\" .AP type name in/out ?indent?
	'\" Start paragraph describing an argument to a library procedure.
	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	'\" or "in/out" to describe whether procedure reads or modifies arg,
	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	'\" needed; use .AS below instead)
	'\"
	'\" .AS ?type? ?name?
	'\" Give maximum sizes of arguments for setting tab stops. Type and
	'\" name are examples of largest possible arguments that will be passed
	'\" to .AP later. If args are omitted, default tab stops are used.
	'\"
	'\" .BS
	'\" Start box enclosure. From here until next .BE, everything will be
	'\" enclosed in one large box.
	'\"
	'\" .BE
	'\" End of box enclosure.
	'\"
	'\" .CS
	'\" Begin code excerpt.
	'\"
	'\" .CE
	'\" End code excerpt.
	'\"
	'\" .VS ?version? ?br?
	'\" Begin vertical sidebar, for use in marking newly-changed parts
	'\" of man pages. The first argument is ignored and used for recording
	'\" the version when the .VS was added, so that the sidebars can be
	'\" found and removed when they reach a certain age. If another argument
	'\" is present, then a line break is forced before starting the sidebar.
	'\"
	'\" .VE
	'\" End of vertical sidebar.
	'\"
	'\" .DS
	'\" Begin an indented unfilled display.
	'\"
	'\" .DE
	'\" End of indented unfilled display.
	'\"
	'\" .SO
	'\" Start of list of standard options for a Tk widget. The
	'\" options follow on successive lines, in four columns separated
	'\" by tabs.
	'\"
	'\" .SE
	'\" End of list of standard options for a Tk widget.
	'\"
	'\" .OP cmdName dbName dbClass
	'\" Start of description of a specific option. cmdName gives the
	'\" option's name as specified in the class command, dbName gives
	'\" the option's name in the option database, and dbClass gives
	'\" the option's class in the option database.
	'\"
	'\" .UL arg1 arg2
	'\" Print arg1 underlined, then print arg2 normally.
	'\"
	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
	'\"
	'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
	.if t .wh -1.3i ^B
	.nr ^l \n(.l
	.ad b
	'\" # Start an argument description
	.de AP
	.ie !"\\$4"" .TP \\$4
	.el \{\
	. ie !"\\$2"" .TP \\n()Cu
	. el .TP 15
	.\}
	.ta \\n()Au \\n()Bu
	.ie !"\\$3"" \{\
	\&\\$1 \\fI\\$2\\fP (\\$3)
	.\".b
	.\}
	.el \{\
	.br
	.ie !"\\$2"" \{\
	\&\\$1 \\fI\\$2\\fP
	.\}
	.el \{\
	\&\\fI\\$1\\fP
	.\}
	.\}
	..
	'\" # define tabbing values for .AP
	.de AS
	.nr )A 10n
	.if !"\\$1"" .nr )A \\w'\\$1'u+3n
	.nr )B \\n()Au+15n
	.\"
	.if !"\\$2"" .nr )B \\w'\\$2'u+\\n()Au+3n
	.nr )C \\n()Bu+\\w'(in/out)'u+2n
	..
	.AS Tcl_Interp Tcl_CreateInterp in/out
	'\" # BS - start boxed text
	'\" # ^y = starting y location
	'\" # ^b = 1
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	.br
	.mk ^y
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	.if n \l'\\n(.lu\(ul'
	.if n .fi
	..
	'\" # BE - end boxed text (draw box now)
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	.nf
	.ti 0
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	.ie n \l'\\n(^lu\(ul'
	.el \{\
	.\" Draw four-sided box normally, but don't draw top of
	.\" box if the box started on an earlier page.
	.ie !\\n(^b-1 \{\
	\h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
	.\}
	.el \}\
	\h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
	.\}
	.\}
	.fi
	.br
	.nr ^b 0
	..
	'\" # VS - start vertical sidebar
	'\" # ^Y = starting y location
	'\" # ^v = 1 (for troff; for nroff this doesn't matter)
	.de VS
	.if !"\\$2"" .br
	.mk ^Y
	.ie n 'mc \s12\(br\s0
	.el .nr ^v 1u
	..
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	.de VE
	.ie n 'mc
	.el \{\
	.ev 2
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	.ti 0
	.mk ^t
	\h'\|\\n(^lu+3n'\L'\|\\n(^Yu-1v\(bv'\v'\\n(^tu+1v-\\n(^Yu'\h'-\|\\n(^lu+3n'
	.sp -1
	.fi
	.ev
	.\}
	.nr ^v 0
	..
	'\" # Special macro to handle page bottom: finish off current
	'\" # box/sidebar if in box/sidebar mode, then invoked standard
	'\" # page bottom macro.
	.de ^B
	.ev 2
	'ti 0
	'nf
	.mk ^t
	.if \\n(^b \{\
	.\" Draw three-sided box if this is the box's first page,
	.\" draw two sides but no top otherwise.
	.ie !\\n(^b-1 \h'-1.5n'\L'\|\\n(^yu-1v'\l'\\n(^lu+3n\(ul'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
	.\}
	.if \\n(^v \{\
	.nr ^x \\n(^tu+1v-\\n(^Yu
	\kx\h'-\\nxu'\h'\|\\n(^lu+3n'\ky\L'-\\n(^xu'\v'\\n(^xu'\h'\|0u'\c
	.\}
	.bp
	'fi
	.ev
	.if \\n(^b \{\
	.mk ^y
	.nr ^b 2
	.\}
	.if \\n(^v \{\
	.mk ^Y
	.\}
	..
	'\" # DS - begin display
	.de DS
	.RS
	.nf
	.sp
	..
	'\" # DE - end display
	.de DE
	.fi
	.RE
	.sp
	..
	'\" # SO - start of list of standard options
	.de SO
	.SH "STANDARD OPTIONS"
	.LP
	.nf
	.ta 5.5c 11c
	.ft B
	..
	'\" # SE - end of list of standard options
	.de SE
	.fi
	.ft R
	.LP
	See the \\fBoptions\\fR manual entry for details on the standard options.
	..
	'\" # OP - start of full description for a single option
	.de OP
	.LP
	.nf
	.ta 4c
	Command-Line Name: \\fB\\$1\\fR
	Database Name: \\fB\\$2\\fR
	Database Class: \\fB\\$3\\fR
	.fi
	.IP
	..
	'\" # CS - begin code excerpt
	.de CS
	.RS
	.nf
	.ta .25i .5i .75i 1i
	..
	'\" # CE - end code excerpt
	.de CE
	.fi
	.RE
	..
	.de UL
	\\$1\l'\|0\(ul'\\$2
	..
	.TH pack-old n 4.0 Tk "Tk Built-In Commands"
	.BS
	'\" Note: do not modify the .SH NAME line immediately below!
	.SH NAME
	pack \- Obsolete syntax for packer geometry manager
	.SH SYNOPSIS
	\fBpack after \fIsibling \fIwindow options\fR ?\fIwindow options \fR...?
	.sp
	\fBpack append \fIparent \fIwindow options\fR ?\fIwindow options \fR...?
	.sp
	\fBpack before \fIsibling \fIwindow options\fR ?\fIwindow options \fR...?
	.sp
	\fBpack unpack \fIwindow\fR
	.BE

	.SH DESCRIPTION
	.PP
	\fINote: this manual entry describes the syntax for the \fBpack\fI
	command as it existed before Tk version 3.3.
	Although this syntax continues to be supported for backward
	compatibility, it is obsolete and should not be used anymore.
	At some point in the future it may cease to be supported.\fR
	.PP
	The packer is a geometry manager that arranges the
	children of a parent by packing them in order around the edges of
	the parent. The first child is placed against one side of
	the window, occupying the entire span of the window along that
	side. This reduces the space remaining for other children as
	if the side had been moved in by the size of the first child.
	Then the next child is placed against one side of the remaining
	cavity, and so on until all children have been placed or there
	is no space left in the cavity.
	.PP
	The \fBbefore\fR, \fBafter\fR, and \fBappend\fR forms of the \fBpack\fR
	command are used to insert one or more children into the packing order
	for their parent. The \fBbefore\fR form inserts the children before
	window \fIsibling\fR in the order; all of the other windows must be
	siblings of \fIsibling\fR. The \fBafter\fR form inserts the windows
	after \fIsibling\fR, and the \fBappend\fR form appends one or more
	windows to the end of the packing order for \fIparent\fR. If a
	\fIwindow\fR named in any of these commands is already packed in
	its parent, it is removed from its current position in the packing
	order and repositioned as indicated by the command. All of these
	commands return an empty string as result.
	.PP
	The \fBunpack\fR form of the \fBpack\fR command removes \fIwindow\fR
	from the packing order of its parent and unmaps it. After the
	execution of this command the packer will no longer manage
	\fIwindow\fR's geometry.
	.PP
	The placement of each child is actually a four-step process;
	the \fIoptions\fR argument following each \fIwindow\fR consists of
	a list of one or more fields that govern the placement of that
	window. In the discussion below, the term \fIcavity\fR refers
	to the space left in a parent when a particular child is placed
	(i.e. all the space that wasn't claimed by earlier children in
	the packing order). The term \fIparcel\fR refers to the space
	allocated to a particular child; this is not necessarily the
	same as the child window's final geometry.
	.PP
	The first step in placing a child is to determine which side of
	the cavity it will lie against. Any one of the following options
	may be used to specify a side:
	.TP
	\fBtop\fR
	Position the child's parcel against the top of the cavity,
	occupying the full width of the cavity.
	.TP
	\fBbottom\fR
	Position the child's parcel against the bottom of the cavity,
	occupying the full width of the cavity.
	.TP
	\fBleft\fR
	Position the child's parcel against the left side of the cavity,
	occupying the full height of the cavity.
	.TP
	\fBright\fR
	Position the child's parcel against the right side of the cavity,
	occupying the full height of the cavity.
	.LP
	At most one of these options should be specified for any given window.
	If no side is specified, then the default is \fBtop\fR.
	.PP
	The second step is to decide on a parcel for the child. For \fBtop\fR
	and \fBbottom\fR windows, the desired parcel width is normally the cavity
	width and the desired parcel height is the window's requested height,
	as passed to \fBTk_GeometryRequest\fR. For \fBleft\fR and \fBright\fR
	windows, the desired parcel height is normally the cavity height and the
	desired width is the window's requested width. However, extra
	space may be requested for the window using any of the following
	options:
	.TP 12
	\fBpadx \fInum\fR
	Add \fInum\fR pixels to the window's requested width before computing
	the parcel size as described above.
	.TP 12
	\fBpady \fInum\fR
	Add \fInum\fR pixels to the window's requested height before computing
	the parcel size as described above.
	.TP 12
	\fBexpand\fR
	This option requests that the window's parcel absorb any extra space left over
	in the parent's cavity after packing all the children.
	The amount of space left over depends on the sizes requested by the
	other children, and may be zero. If several windows have all specified
	\fBexpand\fR then the extra width will be divided equally among all the
	\fBleft\fR and \fBright\fR windows that specified \fBexpand\fR and
	the extra height will be divided equally among all the \fBtop\fR and
	\fBbottom\fR windows that specified \fBexpand\fR.
	.LP
	If the desired width or height for a parcel is larger than the corresponding
	dimension of the cavity, then the cavity's dimension is used instead.
	.PP
	The third step in placing the window is to decide on the window's
	width and height. The default is for the window to receive either
	its requested width and height or the those of the parcel, whichever
	is smaller. If the parcel is larger than the window's requested
	size, then the following options may be used to expand the
	window to partially or completely fill the parcel:
	.TP
	\fBfill\fR
	Set the window's size to equal the parcel size.
	.TP
	\fBfillx\fR
	Increase the window's width to equal the parcel's width, but retain
	the window's requested height.
	.TP
	\fBfilly\fR
	Increase the window's height to equal the parcel's height, but retain
	the window's requested width.
	.PP
	The last step is to decide the window's location within its parcel.
	If the window's size equals the parcel's size, then the window simply
	fills the entire parcel. If the parcel is larger than the window,
	then one of
	the following options may be used to specify where the window should
	be positioned within its parcel:
	.TP 15
	\fBframe center\fR
	Center the window in its parcel. This is the default if no framing
	option is specified.
	.TP 15
	\fBframe n\fR
	Position the window with its top edge centered on the top edge of
	the parcel.
	.TP 15
	\fBframe ne\fR
	Position the window with its upper-right corner at the upper-right corner
	of the parcel.
	.TP 15
	\fBframe e\fR
	Position the window with its right edge centered on the right edge of
	the parcel.
	.TP 15
	\fBframe se\fR
	Position the window with its lower-right corner at the lower-right corner
	of the parcel.
	.TP 15
	\fBframe s\fR
	Position the window with its bottom edge centered on the bottom edge of
	the parcel.
	.TP 15
	\fBframe sw\fR
	Position the window with its lower-left corner at the lower-left corner
	of the parcel.
	.TP 15
	\fBframe w\fR
	Position the window with its left edge centered on the left edge of
	the parcel.
	.TP 15
	\fBframe nw\fR
	Position the window with its upper-left corner at the upper-left corner
	of the parcel.
	.PP
	The packer manages the mapped/unmapped state of all the packed
	children windows. It automatically maps the windows when it packs
	them, and it unmaps any windows for which there was no space left
	in the cavity.
	.PP
	The packer makes geometry requests on behalf of the parent windows
	it manages. For each parent window it requests a size large enough
	to accommodate all the options specified by all the packed children,
	such that zero space would be leftover for \fBexpand\fR options.

	.SH KEYWORDS
	geometry manager, location, packer, parcel, size