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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+                   "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd"
+[
+<!ENTITY % defs SYSTEM "defs.ent"> %defs;
+]>
+
+
+<!-- lifted from troff+ms+XMan by doclifter -->
+<book id="shape">
+
+<bookinfo>
+   <title>X Nonrectangular Window Shape Extension Protocol</title>
+   <subtitle>X.Org Standard</subtitle>
+   <authorgroup>
+      <author>
+         <firstname>Keith</firstname><surname>Packard</surname>
+         <affiliation><orgname>MIT X Consortium</orgname></affiliation>
+         <affiliation><orgname>Intel Corporation</orgname></affiliation>
+      </author>
+      <othercredit>
+         <firstname>Hideki</firstname><surname>Hiura</surname>
+         <affiliation><orgname>SunSoft, Inc.</orgname></affiliation>
+      </othercredit>
+   </authorgroup>
+   <releaseinfo>X Version 11, Release &fullrelvers;</releaseinfo>
+   <releaseinfo>Version 1.1</releaseinfo>
+   <copyright><year>1989</year><year>2004</year><holder>The Open Group</holder></copyright>
+   <copyright><year>2006</year><holder>Keith Packard</holder></copyright>
+<legalnotice>
+
+<para>
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+</para>
+<para>
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+</para>
+<para>
+THE SOFTWARE IS PROVIDED &ldquo;AS IS&rdquo;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+</para>
+<para>
+Except as contained in this notice, the name of the copyright holders
+shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from the
+copyright holders.
+</para>
+</legalnotice>
+</bookinfo>
+
+<chapter id="Overview">
+<title>Overview</title>
+<para>
+<!-- .LP -->
+This extension provides arbitrary window and border shapes within the X11
+protocol.
+</para>
+<para>
+<!-- .LP -->
+The restriction of rectangular windows within the X protocol is a significant
+limitation in the implementation of many styles of user interface.  For
+example, many transient windows would like to display a "drop shadow'' to
+give the illusion of 3 dimensions.  As another example, some user interface
+style guides call for buttons with rounded corners; the full simulation of a
+nonrectangular shape, particularly with respect to event distribution and
+cursor shape, is not possible within the core X protocol.  As a final
+example, round clocks and nonrectangular icons are desirable visual addition
+to the desktop.
+</para>
+<para>
+<!-- .LP -->
+This extension provides mechanisms for changing both the visible and interactive shape of a
+window to arbitrary, possibly disjoint, nonrectangular forms.  The intent
+of the extension is to supplement the existing semantics, not replace them.
+In particular, it is desirable for clients that are unaware of the
+extension to still be able to cope reasonably with shaped windows.  For
+example, window managers should still be able to negotiate screen
+real estate in rectangular pieces.  Toward this end, any shape specified for
+a window is clipped by the bounding rectangle for the window as specified by
+the window's geometry in the core protocol.  An expected convention would be
+that client programs expand their shape to fill the area offered by the
+window manager.
+</para>
+</chapter>
+
+<chapter id="Description">
+<title>Description</title>
+<para>
+Each window (even with no shapes specified) is defined by three regions:  the
+<emphasis remap='I'>bounding region</emphasis>, the <emphasis remap='I'>clip
+region</emphasis> and the <emphasis remap='I'>input region</emphasis>.  The
+bounding region is the area of the
+parent window that the window will occupy (including border). The clip region
+is the subset of the bounding region that is available for subwindows and
+graphics.  The area between the bounding region and the clip region is defined
+to be the border of the window. The input region is the subset of the
+bounding region that can "contain" the pointer.
+</para>
+
+<para>
+A nonshaped window will have a bounding region that is a rectangle
+spanning the window, including its border; the clip region will be a rectangle
+filling the inside dimensions (not including the border); the input
+region will match the bounding region.  In this document,
+these areas are referred to as the
+<emphasis remap='I'>default bounding region</emphasis>, the
+<emphasis remap='I'>default clip region</emphasis> and the
+<emphasis remap='I'>default input region</emphasis>.  For a window with inside
+size of <emphasis remap='I'>width</emphasis> by
+<emphasis remap='I'>height</emphasis> and border width
+<emphasis remap='I'>bwidth</emphasis>, the default bounding, clip
+and input regions are the rectangles (relative to the window origin):
+</para>
+
+<literallayout class="monospaced">
+bounding.x = -<emphasis remap='I'>bwidth</emphasis>
+bounding.y = -<emphasis remap='I'>bwidth</emphasis>
+bounding.width = <emphasis remap='I'>width</emphasis> + 2 * <emphasis remap='I'>bwidth</emphasis>
+bounding.height = <emphasis remap='I'>height</emphasis> + 2 * <emphasis remap='I'>bwidth</emphasis>
+
+clip.x = 0
+clip.y = 0
+clip.width = <emphasis remap='I'>width</emphasis>
+clip.height = <emphasis remap='I'>height</emphasis>
+
+input.x = -<emphasis remap='I'>bwidth</emphasis>
+input.y = -<emphasis remap='I'>bwidth</emphasis>
+input.width = <emphasis remap='I'>width</emphasis> + 2 * <emphasis remap='I'>bwidth</emphasis>
+input.height = <emphasis remap='I'>height</emphasis> + 2 * <emphasis remap='I'>bwidth</emphasis>
+</literallayout>
+
+<para>
+This extension allows a client to modify any combination of the bounding,
+clip or input regions by specifying new regions that combine with the default
+regions.  These new regions are called the
+<emphasis remap='I'>client bounding region</emphasis>,
+the <emphasis remap='I'>client clip region</emphasis> and the
+<emphasis remap='I'>client input region</emphasis>.  They are specified
+relative to the origin of
+the window and are always defined by offsets relative to the window origin
+(that is, region adjustments are not required when the window is moved).
+Three mechanisms for specifying regions are provided:  a list of rectangles,
+a bitmap, and an existing bounding or clip region from a window.  This is
+modeled on the specification of regions in graphics contexts in the core
+protocol and allows a variety of different uses of the extension.
+</para>
+
+<para>
+When using an existing window shape as an operand in specifying a new shape,
+the client region is used, unless none has been set, in which case the
+default region is used instead.
+</para>
+
+<para>
+The <emphasis remap='I'>effective bounding region</emphasis> of a window
+is defined to be the intersection of
+the client bounding region with the default bounding region.  Any portion of
+the client bounding region that is not included in the default bounding
+region will not be included in the effective bounding region on the screen.
+This means that window managers (or other geometry managers) used to dealing
+with rectangular client windows will be able to constrain the client to a
+rectangular area of the screen.
+</para>
+
+<para>
+Construction of the effective bounding region is dynamic; the client bounding
+region is not mutated to obtain the effective bounding region.  If a client
+bounding region is specified that extends beyond the current default bounding
+region, and the window is later enlarged, the effective bounding region will
+be enlarged to include more of the client bounding region.
+</para>
+
+<para>
+The <emphasis remap='I'>effective clip region</emphasis> of a window is defined to be the intersection of the
+client clip region with both the default clip region and the client bounding
+region.  Any portion of the client clip region that is not included in both
+the default clip region and the client bounding region will not be included in
+the effective clip region on the screen.
+</para>
+
+<para>
+Construction of the effective clip region is dynamic; the client clip region is
+not mutated to obtain the effective clip region.  If a client clip region is
+specified that extends beyond the current default clip region and the
+window or its bounding region is later enlarged, the effective clip region will
+be enlarged to include more of the client clip region if it is included in
+the effective bounding region.
+</para>
+
+<para>
+The border of a window is defined to be the difference between the effective
+bounding region and the effective clip region.  If this region is empty, no
+border is displayed.  If this region is nonempty, the border is filled
+using the border-tile or border-pixel of the window as specified in the core
+protocol.  Note that a window with a nonzero border width will never be able
+to draw beyond the default clip region of the window.  Also note that a zero
+border width does not prevent a window from having a border, since the clip
+shape can still be made smaller than the bounding shape.
+</para>
+
+<para>
+All output to the window and visible regions of any subwindows will be
+clipped to the effective clip region.  The server must not retain window
+contents beyond the effective bounding region with backing store.  The window's
+origin (for graphics operations, background tiling, and subwindow placement)
+is not affected by the existence of a bounding region or clip region.
+</para>
+
+<para>
+The <emphasis remap='I'>effective input region</emphasis> of a window is
+defined to be the intersection of the
+client input region with both the default input region and the client bounding
+region.  Any portion of the client input region that is not included in both
+the default input region and the client bounding region will not be included in
+the effective input region on the screen.
+</para>
+<para>
+<!-- .LP -->
+Construction of the effective input region is dynamic; the client input region is
+not mutated to obtain the effective input region.  If a client input region is
+specified that extends beyond the current default input region and the
+window or its bounding region is later enlarged, the effective input region will
+be enlarged to include more of the client input region if it is included in
+the effective bounding region.
+</para>
+<para>
+<!-- .LP  -->
+Areas that are inside the default bounding region but outside the effective
+bounding region are not part of the window; these areas of the screen will
+be occupied by other windows.  Input events that occur within the default
+bounding region but outside the effective bounding region will be delivered as
+if the window was not occluding the event position.  Events that occur in
+a nonrectangular border of a window will be delivered to that window, just
+as for events that occur in a normal rectangular border.
+</para>
+<para>
+<!-- .LP -->
+An
+<function>InputOnly</function>
+window can have its bounding or input region set, but it is a
+<function>Match</function>
+error to attempt to set a clip region on an
+<function>InputOnly</function>
+window or to specify its clip region as a source to a request
+in this extension.
+</para>
+<para>
+<!-- .LP -->
+The server must accept changes to the clip and input regions of a root window, but
+the server is permitted to ignore requested changes to the bounding region
+of a root window.  If the server accepts bounding region changes, the contents
+of the screen outside the bounding region are implementation dependent.
+</para>
+</chapter>
+
+<chapter id="Types">
+<title>Types</title>
+<para>
+<!-- .LP -->
+The following types are used in the request and event definitions in
+subsequent sections.
+</para>
+
+<para>
+SHAPE_KIND:
+{ <function>Bounding</function>,
+<function>Clip</function>,
+<function>Input</function> }
+</para>
+
+<para>
+SHAPE_OP:
+{ <function>Set</function>,
+<function>Union</function>,
+<function>Intersect</function>,
+<function>Subtract</function>,
+<function>Invert</function> }
+</para>
+
+<para>
+<function>Set</function>
+indicates that the region specified as an explicit source in the request is
+stored unaltered as the new destination client region.
+<function>Union</function>
+indicates that the source and destination regions are unioned together to
+produce the new destination client region.
+<function>Intersect</function>
+indicates that the source and destination regions are intersected together to
+produce the new destination client region.
+<function>Subtract</function>
+indicates that the source region is subtracted from the destination region to
+produce the new destination region.
+<function>Invert</function>
+indicates that the destination region is subtracted from the source region to
+produce the new destination region.
+</para>
+</chapter>
+
+<chapter id="Requests">
+<title>Requests</title>
+<para>
+<function>ShapeQueryVersion</function>
+</para>
+
+<para>
+   =&gt;
+</para>
+
+<para>
+majorVersion: CARD16
+</para>
+<para>
+minorVersion: CARD16
+</para>
+
+<para>
+This request can be used to ensure that the server version of the SHAPE
+extension is usable by the client.  This document defines major version one
+(1), minor version one (1).
+</para>
+
+<para>
+<function>ShapeRectangles</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry><emphasis remap='I'>dest</emphasis>: WINDOW</entry>
+    </row>
+    <row>
+      <entry><emphasis remap='I'>destKind</emphasis>: SHAPE_KIND</entry>
+    </row>
+    <row>
+      <entry><emphasis remap='I'>op</emphasis>: SHAPE_OP</entry>
+    </row>
+    <row>
+      <entry><emphasis remap='I'>xOff, yOff</emphasis>: INT16</entry>
+    </row>
+    <row>
+      <entry><emphasis remap='I'>rectangles</emphasis>: LISTofRECTANGLES</entry>
+    </row>
+    <row>
+      <entry><emphasis remap='I'>ordering</emphasis>:
+{ <function>UnSorted</function>,
+<function>YSorted</function>,
+<function>YXSorted</function>,
+<function>YXBanded</function> }
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>,
+<function>Length</function>,
+<function>Match</function>,
+<function>Value</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+This request specifies an array of rectangles, relative to the origin of the
+window plus the specified offset (xOff and yOff) that together
+define a region.  This region is combined (as specified by the operator
+op) with the existing client region (specified by destKind) of the
+destination window, and the result is stored as the specified client region of
+the destination window.  Note that the list of rectangles can be empty,
+specifying an empty region; this is not the same as passing
+<function>None</function> to
+<function>ShapeMask</function>,
+</para>
+
+<para>
+If known by the client,
+ordering relations on the rectangles can be specified with the ordering
+argument.
+This may provide faster operation by the server.
+The meanings of the ordering values are the same as in the core protocol
+<function>SetClipRectangles</function>
+request.
+If an incorrect ordering is specified,
+the server may generate a
+<function>Match </function>
+error, but it is not required to do so.
+If no error is generated,
+the graphics results are undefined.
+Except for
+<function>UnSorted ,</function>
+the rectangles should be nonintersecting, or the resulting region will
+be undefined.
+<function>UnSorted </function>
+means that the rectangles are in arbitrary order.
+<function>YSorted </function>
+means that the rectangles are nondecreasing in their Y origin.
+<function>YXSorted </function>
+additionally constrains
+<function>YSorted </function>
+order in that all rectangles with an equal Y origin are
+nondecreasing in their X origin.
+<function>YXBanded </function>
+additionally constrains
+<function>YXSorted </function>
+by requiring that, for every possible Y scanline,
+all rectangles that include that scanline have identical Y origins and Y
+extents.
+</para>
+
+<para>
+<function>ShapeMask</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>dest</emphasis>: WINDOW
+<emphasis remap='I'>destKind</emphasis>: SHAPE_KIND
+<emphasis remap='I'>op</emphasis>: SHAPE_OP
+<emphasis remap='I'>xOff, yOff</emphasis>: INT16
+<emphasis remap='I'>source</emphasis>: PIXMAP or
+<function>None</function>
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>,
+<function>Pixmap</function>,
+<function>Match</function>,
+<function>Value</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+The source in this request is a 1-bit deep pixmap, or
+<function>None .</function>
+If source is
+<function>None ,</function>
+the specified client region is removed from the window, causing the effective
+region to revert to the default region.  The
+<function>ShapeNotify</function>
+event generated by this request and subsequent
+<function>ShapeQueryExtents</function>
+will report that a client shape has not been specified.
+If a valid pixmap is specified, it is converted
+to a region, with bits set to one included in the region and bits set to
+zero excluded, and an offset from the window origin as specified by
+xOff and yOff.  The resulting region is then combined (as
+specified by the operator op) with the existing client region
+(indicated by destKind) of the destination window, and the result is
+stored as the specified client region of the destination window.  The source
+pixmap and destination window must have been created on the same screen,
+or else a
+<function>Match</function>
+error results.
+</para>
+
+<para>
+<function>ShapeCombine</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>dest</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>destKind</emphasis>: SHAPE_KIND
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>op</emphasis>: SHAPE_OP
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>xOff, yOff</emphasis>: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>source</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>sourceKind</emphasis>: SHAPE_KIND
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>,
+<function>Match</function>,
+<function>Value</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+The client region, indicated by sourceKind, of the source window is
+offset from the window origin by xOff and yOff and combined with
+the client region, indicated by destKind, of the destination window.
+The result is stored as the specified client region of the destination
+window.
+The source and destination windows must be on the same screen, or else a
+<function>Match</function>
+error results.
+</para>
+
+<para>
+<function>ShapeOffset</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>dest</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>destKind</emphasis>: SHAPE_KIND
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>xOff, yOff</emphasis>: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>,
+<function>Match</function>,
+<function>Value</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+The client region, indicated by destKind, is moved relative to its
+current position by the amounts xOff and yOff.
+</para>
+
+<para>
+<function>ShapeQueryExtents</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>dest</emphasis>: WINDOW
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+   =&gt;
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+boundingShaped: BOOL
+      </entry>
+    </row>
+    <row>
+      <entry>
+clipShaped: BOOL
+      </entry>
+    </row>
+    <row>
+      <entry>
+xBoundingShape: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+yBoundingShape: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+widthBoundingShape: CARD16
+      </entry>
+    </row>
+    <row>
+      <entry>
+heightBoundingShape: CARD16
+      </entry>
+    </row>
+    <row>
+      <entry>
+xClipShape: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+yClipShape: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+widthClipShape: CARD16
+      </entry>
+    </row>
+    <row>
+      <entry>
+heightClipShape: CARD16
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+The boundingShaped and clipShaped results are
+<function>True</function>
+if the corresponding client regions have been specified, else they are
+<function>False .</function>
+The x, y, width, and height values define the extents of the client regions,
+when a client region has not been specified, the extents of the
+corresponding default region are reported.
+</para>
+
+<para>
+<function>ShapeSelectInput</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>window</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>enable</emphasis>: BOOL
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>,
+<function>Value</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+Specifying enable as
+<function>True</function>
+causes the server to send the requesting client a
+<function>ShapeNotify</function>
+event whenever the bounding, clip or input region of the specified window is
+altered by any client.
+Specifying enable as
+<function>False</function>
+causes the server to stop sending such events.
+</para>
+
+<para>
+<function>ShapeInputSelected</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>window</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+=&gt;
+enable: BOOL
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+If enable is
+<function>True</function>, then
+<function>ShapeNotify</function>
+events for the window are generated for this client.
+</para>
+
+<para>
+<function>ShapeGetRectangles</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>window</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>kind</emphasis>: SHAPE_KIND
+      </entry>
+    </row>
+    <row>
+      <entry>
+   =&gt;
+rectangles: LISTofRECTANGLE
+      </entry>
+    </row>
+    <row>
+      <entry>
+ordering:
+{ <function>UnSorted</function>,
+<function>YSorted</function>,
+<function>YXSorted</function>,
+<function>YXBanded</function> }
+      </entry>
+    </row>
+    <row>
+      <entry>
+Errors:
+<function>Window,</function>
+<function>Match</function>
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+A list of rectangles describing the region indicated by kind, and the
+ordering of those rectangles, is returned.  The meaning of the ordering
+values is the same as in the
+<function>ShapeRectangles</function>
+request.
+</para>
+</chapter>
+
+<chapter id="Events">
+<title>Events</title>
+<para>
+<function>ShapeNotify</function>
+</para>
+
+<informaltable frame="none">
+  <?dbfo keep-together="always" ?>
+  <tgroup cols='1' align='left' colsep='0' rowsep='0'>
+  <colspec colname='c1' colwidth="1.0*"/>
+  <tbody>
+    <row>
+      <entry>
+<emphasis remap='I'>window</emphasis>: WINDOW
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>kind</emphasis>: SHAPE_KIND
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>shaped</emphasis>: BOOL
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>x, y</emphasis>: INT16
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>width</emphasis>,
+<emphasis remap='I'>height</emphasis>: CARD16
+      </entry>
+    </row>
+    <row>
+      <entry>
+<emphasis remap='I'>time</emphasis>: TIMESTAMP
+      </entry>
+    </row>
+  </tbody>
+  </tgroup>
+</informaltable>
+
+<para>
+Whenever the client bounding, clip or input shape of a window is modified, a
+<function>ShapeNotify</function>
+event is sent to each client that has used
+<function>ShapeSelectInput</function>
+to request it.
+</para>
+
+<para>
+Kind indicates which client region (bounding or clip) has been modified;
+shaped is
+<function>True</function>
+when the window has a client shape of type kind, and is
+<function>False</function>
+when the window no longer has a client shape of this type.
+The x, y, width, and height indicate the extents of the
+current shape.  When shaped is
+<function>False</function>
+these will indicate the extents of the default region.  The timestamp
+indicates the server time when the shape was changed.
+</para>
+</chapter>
+
+<chapter id="Encoding">
+<title>Encoding</title>
+<para>
+Please refer to the X11 Protocol Encoding document as this document uses
+conventions established there.
+</para>
+
+<para>
+The name of this extension is "SHAPE".
+</para>
+
+<sect1 id="New_Types">
+<title>New Types</title>
+
+<literallayout class="monospaced">
+SHAPE_KIND
+     0     Bounding
+     1     Clip
+     2     Input
+</literallayout>
+
+<literallayout class="monospaced">
+SHAPE_OP
+     0     Set
+     1     Union
+     2     Intersect
+     3     Subtract
+     4     Invert
+</literallayout>
+</sect1>
+
+<sect1 id="Requests_2">
+<title>Requests</title>
+<literallayout class="monospaced">
+<function>ShapeQueryVersion</function>
+     1     CARD8              opcode
+     1     0                  shape opcode
+     2     1                  request length
+
+=&gt;
+     1     1                  Reply
+     1                        unused
+     2     CARD16             sequence number
+     4     0                  length
+     2     CARD16             major version
+     2     CARD16             minor version
+     20                       unused
+</literallayout>
+
+<literallayout class="monospaced">
+<function>ShapeRectangles</function>
+     1     CARD8              opcode
+     1     1                  shape opcode
+     2     4+2n               request length
+     1     SHAPE_OP           operation
+     1     SHAPE_KIND         destination kind
+     1                        ordering
+           0     UnSorted
+           1     YSorted
+           2     YXSorted
+           3     YXBanded
+     1                        unused
+     4     WINDOW             destination window
+     2     INT16              x offset
+     2     INT16              y offset
+     8n    LISTofRECTANGLE    rectangles
+</literallayout>
+
+
+<literallayout class="monospaced">
+<function>ShapeMask</function>
+     1     CARD8              opcode
+     1     2                  shape opcode
+     2     5                  request length
+     1     SHAPE_OP           operation
+     1     SHAPE_KIND         destination kind
+     2                        unused
+     4     WINDOW             destination window
+     2     INT16              x offset
+     2     INT16              y offset
+     4     PIXMAP             source bitmap
+           0     None
+</literallayout>
+
+
+<literallayout class="monospaced">
+<function>ShapeCombine</function>
+     1     CARD8              opcode
+     1     3                  shape opcode
+     2     5                  request length
+     1     SHAPE_OP           operation
+     1     SHAPE_KIND         destination kind
+     1     SHAPE_KIND         source kind
+     1                        unused
+     4     WINDOW             destination window
+     2     INT16              x offset
+     2     INT16              y offset
+     4     WINDOW             source window
+</literallayout>
+
+<literallayout class="monospaced">
+<function>ShapeOffset</function>
+     1     CARD8              opcode
+     1     4                  shape opcode
+     2     4                  request length
+     1     SHAPE_KIND         destination kind
+     3                        unused
+     4     WINDOW             destination window
+     2     INT16              x offset
+     2     INT16              y offset
+</literallayout>
+
+<literallayout class="monospaced">
+<function>ShapeQueryExtents</function>
+     1     CARD8              opcode
+     1     5                  shape opcode
+     2     2                  request length
+     4     WINDOW             destination window
+
+ =&gt;
+     1     1                  Reply
+     1                        unused
+     2     CARD16             sequence number
+     4     0                  reply length
+     1     BOOL               bounding shaped
+     1     BOOL               clip shaped
+     2                        unused
+     2     INT16              bounding shape extents x
+     2     INT16              bounding shape extents y
+     2     CARD16             bounding shape extents width
+     2     CARD16             bounding shape extents height
+     2     INT16              clip shape extents x
+     2     INT16              clip shape extents y
+     2     CARD16             clip shape extents width
+     2     CARD16             clip shape extents height
+     4                        unused
+</literallayout>
+
+<literallayout class="monospaced">
+<function>ShapeSelectInput</function>
+     1     CARD8              opcode
+     1     6                  shape opcode
+     2     3                  request length
+     4     WINDOW             destination window
+     1     BOOL               enable
+     3                        unused
+</literallayout>
+
+<literallayout class="monospaced">
+<function>ShapeInputSelected</function>
+     1     CARD8              opcode
+     1     7                  shape opcode
+     2     2                  request length
+     4     WINDOW             destination window
+ =&gt;
+     1     1                  Reply
+     1     BOOL               enabled
+     2     CARD16             sequence number
+     4     0                  reply length
+     24                       unused
+</literallayout>
+
+<literallayout class="monospaced">
+<function>ShapeGetRectangles</function>
+     1     CARD8              opcode
+     1     8                  shape opcode
+     2     3                  request length
+     4     WINDOW             window
+     1     SHAPE_KIND         source kind
+     3                        unused
+ =&gt;
+     1     1                  Reply
+     1                        ordering
+           0     UnSorted
+           1     YSorted
+           2     YXSorted
+           3     YXBanded
+     2     CARD16             sequence number
+     4     2n                 reply length
+     4     CARD32             nrects
+     20                       unused
+     8n    LISTofRECTANGLE    rectangles
+</literallayout>
+</sect1>
+
+<sect1 id="Events_2">
+<title>Events</title>
+<literallayout class="monospaced">
+<function>ShapeNotify</function>
+     1     CARD8               type (0 + extension event base)
+     1     SHAPE_KIND          shape kind
+     2     CARD16              sequence number
+     4     WINDOW              affected window
+     2     INT16               x value of extents
+     2     INT16               y value of extents
+     2     CARD16              width of extents
+     2     CARD16              height of extents
+     4     TIMESTAMP           server time
+     1     BOOL                shaped
+     11                        unused
+</literallayout>
+</sect1>
+</chapter>
+
+<glossary id="glossary">
+<title>Glossary</title>
+<glossentry>
+  <glossterm>bounding region</glossterm>
+  <glossdef>
+<para>
+The area of the parent window that this window will occupy.  This area is
+divided into two parts:  the border and the interior.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>clip region</glossterm>
+  <glossdef>
+<para>
+The interior of the window, as a subset of the bounding region.  This
+region describes the area that will be painted with the window background
+when the window is cleared, will contain all graphics output to the window,
+and will clip any subwindows.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>input region</glossterm>
+  <glossdef>
+<para>
+The subset of the bounding region which can ``contain'' the
+pointer.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>default bounding region</glossterm>
+  <glossdef>
+<para>
+The rectangular area, as described by the core protocol window size, that
+covers the interior of the window and its border.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>default clip region</glossterm>
+  <glossdef>
+<para>
+The rectangular area, as described by the core protocol window size, that
+covers the interior of the window and excludes the border.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>default input region</glossterm>
+  <glossdef>
+<para>
+The rectangular area, as described by the core protocol window size, that
+covers the interior of the window and its border.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>client bounding region</glossterm>
+  <glossdef>
+<para>
+The region associated with a window that is directly modified via this
+extension when specified by
+<function> ShapeBounding .</function>
+This region is used in conjunction with the default bounding region
+to produce the effective bounding region.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>client clip region</glossterm>
+  <glossdef>
+<para>
+The region associated with a window that is directly modified via this
+extension when specified by
+<function> ShapeClip . </function>
+This region is used in conjunction with the default clip region
+and the client bounding region to produce the effective clip region.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>client input region</glossterm>
+  <glossdef>
+<para>
+The region associated with a window that is directly modified via this
+extension when specified by
+<function> ShapeInput . </function>
+This region is used in conjunction with the default input region
+and the client bounding region to produce the effective input region.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>effective bounding region</glossterm>
+  <glossdef>
+<para>
+The actual shape of the window on the screen, including border and interior
+(but excluding the effects of overlapping windows).  When a window has a client
+bounding region, the effective bounding region is the intersection of the
+default bounding region and the client bounding region.  Otherwise, the
+effective bounding region is the same as the default bounding region.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>effective clip region</glossterm>
+  <glossdef>
+<para>
+The actual shape of the interior of the window on the screen (excluding the
+effects of overlapping windows).  When a window has a client clip region or
+a client bounding region, the effective clip region is the intersection of
+the default clip region, the client clip region (if any) and the client
+bounding region (if any).  Otherwise, the effective clip region is the
+same as the default clip region.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<glossentry>
+  <glossterm>effective input region</glossterm>
+  <glossdef>
+<para>
+The actual shape of the window on the screen (excluding the
+effects of overlapping windows) which can ``contain'' the pointer.
+When a window has a client input region or
+a client bounding region, the effective input region is the intersection of
+the default input region, the client input region (if any) and the client
+bounding region (if any).  Otherwise, the effective input region is the
+same as the default input region.
+<!-- .KE -->
+    </para>
+  </glossdef>
+</glossentry>
+<!--
+Revision History
+.LP
+1.0 - 1989 - Original Revision
+.LP
+1.0.1 - March 2004 - Corrected misnumbering of \fIShapeInputSelected
+and \fIShapeGetRectangles requests in encoding section.
+.LP
+1.1 - February 2006 - Added Input regions.
+-->
+</glossary>
+</book>