Pileus Git - ~andy/gtk/blob - docs/reference/gtk/gtk-docs.sgml

   1 <?xml version="1.0"?>
   2 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
   3                "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
   4 <!ENTITY % local.common.attrib "xmlns:xi  CDATA  #FIXED 'http://www.w3.org/2003/XInclude'">
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   6 ]>
   7 <!--ENTITY index-Objects-Grouped SYSTEM "objects_grouped.sgml"-->
   8 <book id="index" xmlns:xi="http://www.w3.org/2003/XInclude">
   9   <bookinfo>
  10     <title>GTK+ Reference Manual</title>
  11     <releaseinfo>
  12       for GTK+ &version;
  13       The latest version of this documentation can be found on-line at
  14       <ulink role="online-location" url="http://library.gnome.org/devel/gtk/unstable/">http://library.gnome.org/devel/gtk/unstable/</ulink>.
  15     </releaseinfo>
  16   </bookinfo>
  17
  18   <part id="gtk">
  19     <title>GTK+ Overview</title>
  20     <partintro>
  21     <para>
  22 GTK+ is a library for creating graphical user interfaces. It
  23 works on many UNIX-like platforms, Windows, and on framebuffer
  24 devices. GTK+ is released under the GNU Library General Public License
  25 (GNU LGPL), which allows for flexible licensing of client
  26 applications. GTK+ has a C-based object-oriented architecture that
  27 allows for maximum flexibility.  Bindings for other languages have
  28 been written, including C++, Objective-C, Guile/Scheme, Perl, Python,
  29 TOM, Ada95, Free Pascal, and Eiffel.
  30     </para>
  31     <para>
  32 GTK+ depends on the following libraries:
  33 <variablelist>
  34
  35 <varlistentry>
  36 <term>GLib</term>
  37 <listitem><para>
  38 A general-purpose utility library, not specific to graphical user interfaces.
  39 GLib provides many useful data types, macros, type conversions,
  40 string utilities, file utilities, a main loop abstraction, and so on.
  41 </para></listitem>
  42 </varlistentry>
  43
  44 <varlistentry>
  45 <term>Pango</term>
  46 <listitem><para>
  47 Pango is a library for internationalized text handling. It centers
  48 around the #PangoLayout object, representing a paragraph of text.
  49 Pango provides the engine for #GtkTextView, #GtkLabel, #GtkEntry, and
  50 other widgets that display text.
  51 </para></listitem>
  52 </varlistentry>
  53
  54 <varlistentry>
  55 <term>ATK</term>
  56 <listitem><para>
  57 ATK is the Accessibility Toolkit. It provides a set of generic
  58 interfaces allowing accessibility technologies to interact with a
  59 graphical user interface. For example, a screen reader uses ATK to
  60 discover the text in an interface and read it to blind users.  GTK+
  61 widgets have built-in support for accessibility using the ATK
  62 framework.
  63 </para></listitem>
  64 </varlistentry>
  65
  66 <varlistentry>
  67 <term>GdkPixbuf</term>
  68 <listitem><para>
  69 This is a small library which allows you to create #GdkPixbuf
  70 ("pixel buffer") objects from image data or image files.
  71 Use a #GdkPixbuf in combination with #GtkImage to display images.
  72 </para></listitem>
  73 </varlistentry>
  74
  75 <varlistentry>
  76 <term>GDK</term>
  77 <listitem><para>
  78 GDK is the abstraction layer that allows GTK+ to support multiple
  79 windowing systems. GDK provides drawing and window system facilities
  80 on X11, Windows, and the Linux framebuffer device.
  81 </para></listitem>
  82 </varlistentry>
  83
  84 <varlistentry>
  85 <term>GTK+</term>
  86 <listitem><para>
  87 The GTK+ library itself contains <firstterm>widgets</firstterm>,
  88 that is, GUI components such as #GtkButton or #GtkTextView.
  89 </para></listitem>
  90 </varlistentry>
  91 </variablelist>
  92     </para>
  93 </partintro>
  94     <xi:include href="building.sgml" />
  95     <xi:include href="compiling.sgml" />
  96     <xi:include href="running.sgml" />
  97     <xi:include href="x11.sgml" />
  98     <xi:include href="windows.sgml" />
  99     <xi:include href="osx.sgml" />
 100     <xi:include href="directfb.sgml" />
 101     <xi:include href="resources.sgml" />
 102     <xi:include href="xml/question_index.sgml" />
 103     <xi:include href="drawing-model.xml" />
 104   </part>
 105
 106
 107   <part  id="gtkbase">
 108     <title>GTK+ Core Reference</title>
 109     <xi:include href="xml/gtkmain.xml" />
 110     <xi:include href="xml/gtkaccelgroup.xml" />
 111     <xi:include href="xml/gtkaccelmap.xml" />
 112     <xi:include href="xml/gtkclipboard.xml" />
 113     <xi:include href="xml/gtkdnd.xml" />
 114     <xi:include href="xml/gtkicontheme.xml" />
 115     <xi:include href="xml/gtkstock.xml" />
 116     <xi:include href="xml/gtkiconfactory.xml" />
 117     <xi:include href="xml/gtkrc.xml" />
 118     <xi:include href="xml/gtksettings.xml" />
 119     <xi:include href="xml/gtkbindings.xml" />
 120     <xi:include href="xml/gtkenums.xml" />
 121     <xi:include href="xml/gtkgc.xml" />
 122     <xi:include href="xml/gtkstyle.xml" />
 123     <xi:include href="xml/gtkselection.xml" />
 124     <xi:include href="xml/gtkfeatures.xml" />
 125     <xi:include href="xml/gtksignal.xml" />
 126     <xi:include href="xml/gtktypeutils.xml" />
 127     <xi:include href="xml/gtktesting.xml" />
 128     <xi:include href="xml/filesystem.xml" />
 129   </part>
 130
 131   <part id="gtkobjects">
 132     <title>GTK+ Widgets and Objects</title>
 133
 134     <chapter>
 135       <title>Object Hierarchy</title>
 136       <xi:include href="xml/tree_index.sgml" />
 137     </chapter>
 138
 139     <chapter>
 140       <title>Widget Gallery</title>
 141       <xi:include href="visual_index.xml" />
 142     </chapter>
 143
 144     <chapter id="WindowWidgets">
 145       <title>Windows</title>
 146       <xi:include href="xml/gtkdialog.xml" />
 147       <xi:include href="xml/gtkinvisible.xml" />
 148       <xi:include href="xml/gtkmessagedialog.xml" />
 149       <xi:include href="xml/gtkwindow.xml" />
 150       <xi:include href="xml/gtkwindowgroup.xml" />
 151       <xi:include href="xml/gtkaboutdialog.xml" />
 152       <xi:include href="xml/gtkassistant.xml" />
 153       <xi:include href="xml/gtkoffscreenwindow.xml" />
 154     </chapter>
 155
 156     <chapter id="DisplayWidgets">
 157       <title>Display Widgets</title>
 158       <xi:include href="xml/gtkaccellabel.xml" />
 159       <xi:include href="xml/gtkimage.xml" />
 160       <xi:include href="xml/gtklabel.xml" />
 161       <xi:include href="xml/gtkprogressbar.xml" />
 162       <xi:include href="xml/gtkstatusbar.xml" />
 163       <xi:include href="xml/gtkinfobar.xml" />
 164       <xi:include href="xml/gtkstatusicon.xml" />
 165       <xi:include href="xml/gtkspinner.xml" />
 166     </chapter>
 167
 168     <chapter id="ButtonWidgets">
 169       <title>Buttons and Toggles</title>
 170       <xi:include href="xml/gtkbutton.xml" />
 171       <xi:include href="xml/gtkcheckbutton.xml" />
 172       <xi:include href="xml/gtkradiobutton.xml" />
 173       <xi:include href="xml/gtktogglebutton.xml" />
 174       <xi:include href="xml/gtklinkbutton.xml" />
 175       <xi:include href="xml/gtkscalebutton.xml" />
 176       <xi:include href="xml/gtkvolumebutton.xml" />
 177     </chapter>
 178
 179     <chapter id="NumericEntry">
 180       <title>Numeric/Text Data Entry</title>
 181       <xi:include href="xml/gtkentry.xml" />
 182       <xi:include href="xml/gtkentrybuffer.xml" />
 183       <xi:include href="xml/gtkentrycompletion.xml" />
 184       <xi:include href="xml/gtkhscale.xml" />
 185       <xi:include href="xml/gtkvscale.xml" />
 186       <xi:include href="xml/gtkspinbutton.xml" />
 187       <xi:include href="xml/gtkeditable.xml" />
 188     </chapter>
 189
 190     <chapter id="TextWidgetObjects">
 191       <title>Multiline Text Editor</title>
 192       <xi:include href="xml/text_widget.sgml" />
 193       <xi:include href="xml/gtktextiter.xml" />
 194       <xi:include href="xml/gtktextmark.xml" />
 195       <xi:include href="xml/gtktextbuffer.xml" />
 196       <xi:include href="xml/gtktexttag.xml" />
 197       <xi:include href="xml/gtktexttagtable.xml" />
 198       <xi:include href="xml/gtktextview.xml" />
 199     </chapter>
 200
 201     <chapter id="TreeWidgetObjects">
 202       <title>Tree, List and Icon Grid Widgets</title>
 203       <xi:include href="xml/tree_widget.sgml" />
 204       <xi:include href="xml/gtktreemodel.xml" />
 205       <xi:include href="xml/gtktreeselection.xml" />
 206       <xi:include href="xml/gtktreeviewcolumn.xml" />
 207       <xi:include href="xml/gtktreeview.xml" />
 208       <xi:include href="xml/gtktreednd.xml" />
 209       <xi:include href="xml/gtkcellview.xml" />
 210       <xi:include href="xml/gtkiconview.xml" />
 211       <xi:include href="xml/gtktreesortable.xml" />
 212       <xi:include href="xml/gtktreemodelsort.xml" />
 213       <xi:include href="xml/gtktreemodelfilter.xml" />
 214       <xi:include href="xml/gtkcelllayout.xml" />
 215       <xi:include href="xml/gtkcellrenderer.xml" />
 216       <xi:include href="xml/gtkcelleditable.xml" />
 217       <xi:include href="xml/gtkcellrendereraccel.xml" />
 218       <xi:include href="xml/gtkcellrenderercombo.xml" />
 219       <xi:include href="xml/gtkcellrendererpixbuf.xml" />
 220       <xi:include href="xml/gtkcellrendererprogress.xml" />
 221       <xi:include href="xml/gtkcellrendererspin.xml" />
 222       <xi:include href="xml/gtkcellrenderertext.xml" />
 223       <xi:include href="xml/gtkcellrenderertoggle.xml" />
 224       <xi:include href="xml/gtkcellrendererspinner.xml" />
 225       <xi:include href="xml/gtkliststore.xml" />
 226       <xi:include href="xml/gtktreestore.xml" />
 227     </chapter>
 228
 229     <chapter id="MenusAndCombos">
 230       <title>Menus, Combo Box, Toolbar</title>
 231       <xi:include href="xml/gtkcombobox.xml" />
 232       <xi:include href="xml/gtkcomboboxentry.xml" />
 233       <xi:include href="xml/gtkmenu.xml" />
 234       <xi:include href="xml/gtkmenubar.xml" />
 235       <xi:include href="xml/gtkmenuitem.xml" />
 236       <xi:include href="xml/gtkimagemenuitem.xml" />
 237       <xi:include href="xml/gtkradiomenuitem.xml" />
 238       <xi:include href="xml/gtkcheckmenuitem.xml" />
 239       <xi:include href="xml/gtkseparatormenuitem.xml" />
 240       <xi:include href="xml/gtktearoffmenuitem.xml" />
 241       <xi:include href="xml/gtktoolshell.xml" />
 242       <xi:include href="xml/gtktoolbar.xml" />
 243       <xi:include href="xml/gtktoolitem.xml" />
 244       <xi:include href="xml/gtktoolpalette.xml" />
 245       <xi:include href="xml/gtktoolitemgroup.xml" />
 246       <xi:include href="xml/gtkseparatortoolitem.xml" />
 247       <xi:include href="xml/gtktoolbutton.xml" />
 248       <xi:include href="xml/gtkmenutoolbutton.xml" />
 249       <xi:include href="xml/gtktoggletoolbutton.xml" />
 250       <xi:include href="xml/gtkradiotoolbutton.xml" />
 251     </chapter>
 252
 253     <chapter id="Actions">
 254       <title>Action-based menus and toolbars</title>
 255       <xi:include href="xml/gtkuimanager.xml" />
 256       <xi:include href="xml/gtkactiongroup.xml" />
 257       <xi:include href="xml/gtkaction.xml" />
 258       <xi:include href="xml/gtktoggleaction.xml" />
 259       <xi:include href="xml/gtkradioaction.xml" />
 260       <xi:include href="xml/gtkrecentaction.xml" />
 261       <xi:include href="xml/gtkactivatable.xml" />
 262     </chapter>
 263
 264     <chapter id="SelectorWidgets">
 265       <title>Selectors (File/Font/Color/Input Devices)</title>
 266       <xi:include href="xml/gtkcolorbutton.xml" />
 267       <xi:include href="xml/gtkcolorseldlg.xml" />
 268       <xi:include href="xml/gtkcolorsel.xml" />
 269       <xi:include href="xml/gtkhsv.xml" />
 270       <xi:include href="xml/gtkfilechooser.xml" />
 271       <xi:include href="xml/gtkfilechooserbutton.xml" />
 272       <xi:include href="xml/gtkfilechooserdialog.xml" />
 273       <xi:include href="xml/gtkfilechooserwidget.xml" />
 274       <xi:include href="xml/gtkfilefilter.xml" />
 275       <xi:include href="xml/gtkfontbutton.xml" />
 276       <xi:include href="xml/gtkfontsel.xml" />
 277       <xi:include href="xml/gtkfontseldlg.xml" />
 278       <xi:include href="xml/gtkinputdialog.xml" />
 279     </chapter>
 280
 281     <chapter id="LayoutContainers">
 282       <title>Layout Containers</title>
 283       <xi:include href="xml/gtkalignment.xml" />
 284       <xi:include href="xml/gtkaspectframe.xml" />
 285       <xi:include href="xml/gtkhbox.xml" />
 286       <xi:include href="xml/gtkvbox.xml" />
 287       <xi:include href="xml/gtkhbbox.xml" />
 288       <xi:include href="xml/gtkvbbox.xml" />
 289       <xi:include href="xml/gtkfixed.xml" />
 290       <xi:include href="xml/gtkhpaned.xml" />
 291       <xi:include href="xml/gtkvpaned.xml" />
 292       <xi:include href="xml/gtklayout.xml" />
 293       <xi:include href="xml/gtknotebook.xml" />
 294       <xi:include href="xml/gtktable.xml" />
 295       <xi:include href="xml/gtkexpander.xml" />
 296       <xi:include href="xml/gtkorientable.xml" />
 297       <xi:include href="xml/gtkextendedlayout.xml" />
 298     </chapter>
 299
 300     <chapter id="Ornaments">
 301       <title>Ornaments</title>
 302       <xi:include href="xml/gtkframe.xml" />
 303       <xi:include href="xml/gtkhseparator.xml" />
 304       <xi:include href="xml/gtkvseparator.xml" />
 305     </chapter>
 306
 307     <chapter id="ScrollingWidgets">
 308       <title>Scrolling</title>
 309       <xi:include href="xml/gtkhscrollbar.xml" />
 310       <xi:include href="xml/gtkvscrollbar.xml" />
 311       <xi:include href="xml/gtkscrolledwindow.xml" />
 312     </chapter>
 313
 314     <chapter id="Printing">
 315       <title>Printing</title>
 316       <xi:include href="xml/gtkprintoperation.xml" />
 317       <xi:include href="xml/gtkprintcontext.xml" />
 318       <xi:include href="xml/gtkprintsettings.xml" />
 319       <xi:include href="xml/gtkpagesetup.xml" />
 320       <xi:include href="xml/gtkpapersize.xml" />
 321       <xi:include href="xml/gtkprinter.xml" />
 322       <xi:include href="xml/gtkprintjob.xml" />
 323       <xi:include href="xml/gtkprintunixdialog.xml" />
 324       <xi:include href="xml/gtkpagesetupunixdialog.xml" />
 325     </chapter>
 326
 327     <chapter id="MiscObjects">
 328       <title>Miscellaneous</title>
 329       <xi:include href="xml/gtkadjustment.xml" />
 330       <xi:include href="xml/gtkarrow.xml" />
 331       <xi:include href="xml/gtkcalendar.xml" />
 332       <xi:include href="xml/gtkdrawingarea.xml" />
 333       <xi:include href="xml/gtkeventbox.xml" />
 334       <xi:include href="xml/gtkhandlebox.xml" />
 335       <xi:include href="xml/gtkimcontextsimple.xml" />
 336       <xi:include href="xml/gtkimmulticontext.xml" />
 337       <xi:include href="xml/gtksizegroup.xml" />
 338       <xi:include href="xml/gtktooltip.xml" />
 339       <xi:include href="xml/gtkviewport.xml" />
 340       <xi:include href="xml/gtkaccessible.xml" />
 341     </chapter>
 342
 343     <chapter id="AbstractObjects">
 344       <title>Abstract Base Classes</title>
 345       <xi:include href="xml/gtkbin.xml" />
 346       <xi:include href="xml/gtkbox.xml" />
 347       <xi:include href="xml/gtkbbox.xml" />
 348       <xi:include href="xml/gtkcontainer.xml" />
 349       <xi:include href="xml/gtkitem.xml" />
 350       <xi:include href="xml/gtkmenushell.xml" />
 351       <xi:include href="xml/gtkmisc.xml" />
 352       <xi:include href="xml/gtkobject.xml" />
 353       <xi:include href="xml/gtkpaned.xml" />
 354       <xi:include href="xml/gtkrange.xml" />
 355       <xi:include href="xml/gtkscale.xml" />
 356       <xi:include href="xml/gtkscrollbar.xml" />
 357       <xi:include href="xml/gtkseparator.xml" />
 358       <xi:include href="xml/gtkwidget.xml" />
 359       <xi:include href="xml/gtkimcontext.xml" />
 360     </chapter>
 361
 362     <chapter id="PlugSocket">
 363       <title>Cross-process Embedding</title>
 364       <xi:include href="xml/gtkplug.xml" />
 365       <xi:include href="xml/gtksocket.xml" />
 366     </chapter>
 367
 368     <chapter id="SpecialObjects">
 369       <title>Special-purpose features</title>
 370       <xi:include href="xml/gtkcurve.xml" />
 371       <xi:include href="xml/gtkgamma.xml" />
 372       <xi:include href="xml/gtkruler.xml" />
 373       <xi:include href="xml/gtkhruler.xml" />
 374       <xi:include href="xml/gtkvruler.xml" />
 375     </chapter>
 376
 377     <chapter id="RecentDocuments">
 378       <title>Recently Used Documents</title>
 379       <xi:include href="xml/gtkrecentmanager.xml" />
 380       <xi:include href="xml/gtkrecentchooser.xml" />
 381       <xi:include href="xml/gtkrecentchooserdialog.xml" />
 382       <xi:include href="xml/gtkrecentchoosermenu.xml" />
 383       <xi:include href="xml/gtkrecentchooserwidget.xml" />
 384       <xi:include href="xml/gtkrecentfilter.xml" />
 385     </chapter>
 386
 387     <chapter id="Builder">
 388       <title>Interface builder</title>
 389       <xi:include href="xml/gtkbuildable.xml" />
 390       <xi:include href="xml/gtkbuilder.xml" />
 391     </chapter>
 392   </part>
 393
 394   <part id="migrating">
 395     <title>Migrating from Previous Versions of GTK+</title>
 396
 397     <partintro>
 398       <para>
 399         This part describes what you need to change in programs use
 400         older versions of GTK+ so that they can use the new features.
 401         It also mentions how to convert applications using widgets
 402         found in the libgnomeui library to use their counterparts
 403         in GTK+.
 404       </para>
 405     </partintro>
 406
 407     <xi:include href="xml/migrating-checklist.sgml" />
 408     <xi:include href="changes-1.2.sgml" />
 409     <xi:include href="changes-2.0.sgml" />
 410     <xi:include href="xml/migrating-GtkFileChooser.sgml" />
 411     <xi:include href="xml/migrating-GtkAction.sgml" />
 412     <xi:include href="xml/migrating-GtkComboBox.sgml" />
 413     <xi:include href="xml/migrating-GtkIconView.sgml" />
 414     <xi:include href="xml/migrating-GtkAboutDialog.sgml" />
 415     <xi:include href="xml/migrating-GtkColorButton.sgml" />
 416     <xi:include href="xml/migrating-GtkAssistant.sgml" />
 417     <xi:include href="xml/migrating-GtkRecentChooser.sgml" />
 418     <xi:include href="xml/migrating-GtkLinkButton.sgml" />
 419     <xi:include href="xml/migrating-GtkBuilder.sgml" />
 420     <xi:include href="xml/migrating-GtkTooltip.sgml" />
 421     <xi:include href="xml/migrating-GtkEntry-icons.sgml" />
 422     <xi:include href="xml/migrating-GtkLabel-links.sgml" />
 423     <xi:include href="xml/migrating-ClientSideWindows.sgml" />
 424   </part>
 425
 426   <part>
 427     <title>GTK+ Tools</title>
 428     <xi:include href="gtk-query-immodules-2.0.xml" />
 429     <xi:include href="gtk-update-icon-cache.xml" />
 430     <xi:include href="gtk-builder-convert.xml" />
 431   </part>
 432
 433   <xi:include href="glossary.xml" />
 434
 435   <index id="api-index-full">
 436     <title>Index of all symbols</title>
 437     <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
 438   </index>
 439   <index id="api-index-deprecated" role="deprecated">
 440     <title>Index of deprecated symbols</title>
 441     <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
 442   </index>
 443   <index id="api-index-2-2" role="2.2">
 444     <title>Index of new symbols in 2.2</title>
 445     <xi:include href="xml/api-index-2.2.xml"><xi:fallback /></xi:include>
 446   </index>
 447   <index id="api-index-2-4" role="2.4">
 448     <title>Index of new symbols in 2.4</title>
 449     <xi:include href="xml/api-index-2.4.xml"><xi:fallback /></xi:include>
 450   </index>
 451   <index id="api-index-2-6" role="2.6">
 452     <title>Index of new symbols in 2.6</title>
 453     <xi:include href="xml/api-index-2.6.xml"><xi:fallback /></xi:include>
 454   </index>
 455   <index id="api-index-2-8" role="2.8">
 456     <title>Index of new symbols in 2.8</title>
 457     <xi:include href="xml/api-index-2.8.xml"><xi:fallback /></xi:include>
 458   </index>
 459   <index id="api-index-2-10" role="2.10">
 460     <title>Index of new symbols in 2.10</title>
 461     <xi:include href="xml/api-index-2.10.xml"><xi:fallback /></xi:include>
 462   </index>
 463   <index id="api-index-2-12" role="2.12">
 464     <title>Index of new symbols in 2.12</title>
 465     <xi:include href="xml/api-index-2.12.xml"><xi:fallback /></xi:include>
 466   </index>
 467   <index id="api-index-2-14" role="2.14">
 468     <title>Index of new symbols in 2.14</title>
 469     <xi:include href="xml/api-index-2.14.xml"><xi:fallback /></xi:include>
 470   </index>
 471   <index id="api-index-2-16" role="2.16">
 472     <title>Index of new symbols in 2.16</title>
 473     <xi:include href="xml/api-index-2.16.xml"><xi:fallback /></xi:include>
 474   </index>
 475   <index id="api-index-2-18" role="2.18">
 476     <title>Index of new symbols in 2.18</title>
 477     <xi:include href="xml/api-index-2.18.xml"><xi:fallback /></xi:include>
 478   </index>
 479   <index id="api-index-2-20" role="2.20">
 480     <title>Index of new symbols in 2.20</title>
 481     <xi:include href="xml/api-index-2.20.xml"><xi:fallback /></xi:include>
 482   </index>
 483   <index id="api-index-2-22" role="2.22">
 484     <title>Index of new symbols in 2.20</title>
 485     <xi:include href="xml/api-index-2.22.xml"><xi:fallback /></xi:include>
 486   </index>
 487   <index id="api-index-3-0" role="3.0">
 488     <title>Index of new symbols in 3.0</title>
 489     <xi:include href="xml/api-index-3.0.xml"><xi:fallback /></xi:include>
 490   </index>
 491
 492   <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
 493
 494 </book>