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diff --git a/doc/manual/Makefile.kmk b/doc/manual/Makefile.kmk
new file mode 100644
index 00000000..d14dc963
--- /dev/null
+++ b/doc/manual/Makefile.kmk
@@ -0,0 +1,1004 @@
+# $Id: Makefile.kmk $
+## @file
+# Sub-Makefile for the VirtualBox User Manual, SDK reference and other manuals.
+#
+
+#
+# Copyright (C) 2006-2023 Oracle and/or its affiliates.
+#
+# This file is part of VirtualBox base platform packages, as
+# available from https://www.virtualbox.org.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation, in version 3 of the
+# License.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses>.
+#
+# SPDX-License-Identifier: GPL-3.0-only
+#
+
+#
+# This slightly messy makefile transforms the DocBook XML source for the
+# user manual into presentation output. We support two targets:
+#
+#   -- UserManual.pdf, generated by LaTex
+#
+#   -- VirtualBox.chm
+#
+#   Both files end up in PATH_STAGE_BIN.
+#
+#   Both targets indirectly depend on the XML files in this directory;
+#   "indirectly" because we first copy them to PATH_TARGET and hack them
+#   up a bit for variable substitution and such (see below).
+#   The toolchains are roughly like this:
+#
+#   -- PDF file via Apache FOP: pre-process the XML files in PATH_TARGET,
+#      then create a .FO file (another XML format for "formatted objects")
+#      via xsltproc, then feed the .FO file to Apache FOP to create the PDF.
+#
+#   -- PDF file via LaTeX: pre-process the XML files in PATH_TARGET, then
+#      run our custom "dblatex" perl script on UserManual.xml, which parses
+#      the XML (using the Perl SAX parsers) and dumps a matching LaTeX file
+#      to UserManual.tex. This is then regularly processed by pdflatex to
+#      generate PDF.
+#
+#   -- CHM file: again, pre-process the XML files in PATH_TARGET, then use
+#      xsltproc to create a .HHP file for the Microsoft Help Compiler, then
+#      feed that file to it.
+#
+
+SUB_DEPTH = ../..
+include $(KBUILD_PATH)/subheader.kmk
+
+ifndef VBOX_DOC_MANUAL_CONFIG_KMK_INCLUDED
+ include $(PATH_SUB_CURRENT)/Config.kmk
+endif
+
+
+#
+# Globals
+#
+
+# Error out if someone tries to override old globals.
+ifdef HTMLHELPOPTS
+ $(error HTMLHELPOPTS was renamed to VBOX_HTMLHELP_OPTS!)
+endif
+ifdef DOCBOOKPATH
+ $(error DOCBOOKPATH was renamed to VBOX_PATH_DOCBOOK!)
+endif
+ifdef DOCBOOKPATH
+ $(error DOCBOOKPATH was renamed to VBOX_PATH_DOCBOOK!)
+endif
+ifdef XML_CATALOG
+ $(error XML_CATALOG was renamed to VBOX_XML_CATALOG!)
+endif
+ifdef XML_CATALOG_DOCBOOK
+ $(error XML_CATALOG_DOCBOOK was renamed to VBOX_XML_CATALOG_DOCBOOK!)
+endif
+ifdef PDFLATEX_INTERACTION
+ $(error PDFLATEX_INTERACTION was renamed to VBOX_PDFLATEX_INTERACTION!)
+endif
+ifdef PDFLATEX
+ $(error PDFLATEX was renamed to VBOX_PDFLATEX_CMD!)
+endif
+ifdef HHC
+ $(error HHC was renamed to VBOX_HHC!)
+endif
+
+VBOX_QHELP_OUTPUT_FILES = \
+	UserManual.qch \
+	UserManual.qhc
+
+# VBOX_PDFLATEX_INTERACTION = errorstopmode - Use this when you wants to figure out build failures
+#                                             without catting the log a million times.
+VBOX_PDFLATEX_INTERACTION ?= batchmode
+ifeq ($(KBUILD_HOST),win)
+ ifndef VBOX_PDFLATEX
+  VBOX_PDFLATEX           := $(firstword $(rsort $(wildcard $(KBUILD_DEVTOOLS)/win.x86/miktex-portable/*/miktex/bin/pdflatex.exe)))
+  ifneq ($(VBOX_PDFLATEX),)
+   VBOX_PDFLATEX_CMD       = $(VBOX_PDFLATEX) -halt-on-error -interaction $(VBOX_PDFLATEX_INTERACTION)
+  endif
+ endif
+ ifndef VBOX_PDFLATEX
+  # Tell MiKTeX to automatically download packages if system wide install.
+  VBOX_PDFLATEX           := pdflatex
+  VBOX_PDFLATEX_CMD        = $(VBOX_PDFLATEX) -halt-on-error -interaction $(VBOX_PDFLATEX_INTERACTION) --enable-installer
+ endif
+else
+ VBOX_PDFLATEX            ?= pdflatex
+ VBOX_PDFLATEX_HALT        = $(shell ( $(VBOX_PDFLATEX) -version | head -1 | grep 141592 > /dev/null ) && echo -halt-on-error )
+ VBOX_PDFLATEX_CMD         = pdflatex $(VBOX_PDFLATEX_HALT) -interaction $(VBOX_PDFLATEX_INTERACTION)
+endif
+
+# Windows HTML Help Workshop compiler (stupid thing always returns an error!)
+VBOX_HHC = -$(EXEC_X86_WIN32) $(VBOX_PATH_HTML_HELP_WORKSHOP)/hhc.exe
+
+
+# Additional xsltproc options when generating
+VBOX_HTMLHELP_OPTS ?=
+
+# SDK related globals.
+VBOX_MANUAL_APIREF_TMP = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/SDKRef_apiref.xml
+VBOX_DOC_XIDL_SRC      = $(PATH_ROOT)/src/VBox/Main/idl/VirtualBox.xidl
+VBOX_DOC_XIDL_SRC_TMP  = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/VirtualBox.xidl.tmp
+
+
+#
+# Targets
+#
+
+BLDDIRS += $(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/, $(VBOX_MANUAL_LANGUAGES))
+
+if defined(VBOX_WITH_DOCS) && (!defined(VBOX_ONLY_BUILD) || defined(VBOX_ONLY_DOCS) || defined(VBOX_ONLY_SDK))
+ if defined(VBOX_ONLY_SDK) || defined(VBOX_WITH_DOCS_SDKREF)
+  INSTALLS += VBox-docs-sdkref
+ endif
+
+ ifdef VBOX_WITH_DOCS_HTML
+  INSTALLS += VBox-docs-usermanual-html
+  VBOX_PATH_BIN_HTML = $(PATH_STAGE_BIN)/UserManual-html.zip
+ else  # Do not build html.
+  VBOX_PATH_BIN_HTML =
+ endif
+
+ ifdef VBOX_WITH_DOCS_CHM
+  INSTALLS += VBox-docs-usermanual-chm
+  VBOX_PATH_BIN_CHM = $(PATH_STAGE_BIN)/VirtualBox.chm
+ else  # Do not build chm.
+  VBOX_PATH_BIN_CHM =
+ endif
+
+ ifdef VBOX_WITH_DOCS_QHELP
+  INSTALLS += VBox-docs-usermanual-qhc
+  INSTALLS += VBox-docs-usermanual-qch
+  ifdef VBOX_WITH_QT6
+   USES += qt6
+   QHELPGENERATOR = $(PATH_TOOL_QT6_LIBEXEC)/qhelpgenerator
+  else # Qt5
+   USES += qt5
+   QHELPGENERATOR_VERSION_MINOR = $(shell $(REDIRECT) -E QT_QPA_PLATFORM_PLUGIN_PATH=$(PATH_SDK_QT5)/plugins -- $(PATH_TOOL_QT5_BIN)/qhelpgenerator -v 2>/dev/null | $(SED) -ne 's/.*(Qt [1-9][0-9]*\.\([1-9][0-9]*\)\.[1-9][0-9]*).*$$/\1/p')
+   QHELPGENERATOR = $(PATH_TOOL_QT5_BIN)/$(if-expr $(QHELPGENERATOR_VERSION_MINOR) >= 12,qhelpgenerator,qcollectiongenerator)
+  endif
+ endif
+ ifdef VBOX_WITH_DOCS_QHELP_PACKING
+  VBOX_PATH_BIN_QHELP = $(PATH_STAGE_BIN)/UserManual.qch
+  VBOX_PATH_BIN_QHELP += $(PATH_STAGE_BIN)/UserManual.qhc
+ else  # Do not install/pack qhelp.
+  VBOX_PATH_BIN_QHELP =
+ endif
+
+
+ ifndef VBOX_ONLY_SDK
+  VBOX_MANUAL_PACK += \
+  	$(PATH_STAGE_BIN)/UserManual.pdf \
+  	$(VBOX_PATH_BIN_HTML) \
+  	$(VBOX_PATH_BIN_CHM) \
+  	$(VBOX_PATH_BIN_QHELP)
+  INSTALLS += VBox-docs-usermanual
+
+  ifdef VBOX_WITH_DOCS_TRANSLATIONS
+   INSTALLS += VBox-docs-usermanual-l10n
+   VBOX_MANUAL_PACK += \
+   	$(foreach f,$(VBOX_MANUAL_ADD_LANGUAGES),$(PATH_STAGE_BIN)/UserManual_$(f).pdf)
+   ifdef VBOX_WITH_DOCS_CHM
+    INSTALLS += VBox-docs-usermanual-l10n-chm
+    VBOX_MANUAL_PACK += \
+    	$(foreach f,$(VBOX_MANUAL_ADD_LANGUAGES),$(PATH_STAGE_BIN)/VirtualBox_$(f).chm)
+   endif
+  endif
+ endif # !VBOX_ONLY_SDK
+
+ ifdef VBOX_WITH_DOCS_ACCESSIBILITY
+  INSTALLS += VBox-docs-accessibility
+  INSTALLS += VBox-docs-accessibility-html
+ endif
+
+ ifdef VBOX_ONLY_DOCS
+  PACKING += $(PATH_STAGE_BIN)/VBoxDocumentation.zip
+ endif
+
+ ifdef VBOX_WITH_DOCS_TRANSLATIONS
+  VBOX_MANUAL_LANGUAGES += $(VBOX_MANUAL_ADD_LANGUAGES)
+ endif
+
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES), \
+ $(eval VBOX_MANUAL_XML_FILES_GENERATED_$$(lang) := \
+ 	$$(addprefix $$(VBOX_PATH_MANUAL_OUTBASE)/$$(lang)/user_,$$(filter man_VBoxManage%,$$(VBOX_MANUAL_XML_REFENTRY_FILES))) \
+ 	$$(addprefix $$(VBOX_PATH_MANUAL_OUTBASE)/overview_,$$(filter man_VBoxManage%,$$(VBOX_MANUAL_XML_REFENTRY_FILES))) \
+ 	$$(VBOX_PATH_MANUAL_OUTBASE)/$$(lang)/user_man_VBoxHeadless.xml \
+ 	$$(VBOX_PATH_MANUAL_OUTBASE)/$$(lang)/user_man_vboximg-mount.xml \
+ 	$$(VBOX_PATH_MANUAL_OUTBASE)/$$(lang)/user_isomakercmd-man.xml))
+
+ VBOX_SDKREF_XML_FILES = \
+ 	SDKRef.xml
+
+ VBOX_ACCESSIBILITY_XML_FILES = \
+ 	Accessibility.xml
+
+
+ # Wildcard the images path for every supported language
+ $(foreach f,$(VBOX_MANUAL_LANGUAGES), \
+ 	$(eval VBOX_MANUAL_PNG_FILES_$$(f) := $$(patsubst $$(VBOX_PATH_MANUAL_SRC)/$$(f)/%,%,$$(wildcard $$(VBOX_PATH_MANUAL_SRC)/$$(f)/images/*.png))))
+
+ VBOX_MANUAL_TEX_UNICODE_FILES = \
+ 	$(wildcard $(VBOX_PATH_MANUAL_SRC)/texfiles/unicode/*)
+
+ VBOX_MANUAL_LATEX_FILES_TARGET = \
+ 	$(addprefix UserManual.,aux log out toc tex)
+
+ VBOX_SDKREF_LATEX_FILES_TARGET = \
+ 	$(addprefix SDKRef.,aux log out toc tex)
+
+ VBOX_ACCESSIBILITY_LATEX_FILES_TARGET = \
+ 	$(addprefix Accessibility.,aux log out toc tex)
+
+ BLDDIRS += \
+ 	$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/, \
+ 	$(addsuffix /images, $(VBOX_MANUAL_LANGUAGES)) \
+ 	$(addsuffix /html-single, $(VBOX_MANUAL_LANGUAGES)) \
+ 	$(addsuffix /html-chunks, $(VBOX_MANUAL_LANGUAGES)) \
+ 	$(addsuffix /qhelp, $(VBOX_MANUAL_LANGUAGES)) \
+ 	$(addsuffix /qhelp/images, $(VBOX_MANUAL_LANGUAGES)) \
+ 	$(addsuffix /HTMLHelp, $(VBOX_MANUAL_LANGUAGES)) \
+ 	$(addsuffix /HTMLHelp/images, $(VBOX_MANUAL_LANGUAGES)) \
+ 	)
+
+ # Explicit cleaning has some overlap with default cleaning rules, since this
+ # Makefile is using very complex conditionals for selectively creating
+ # specific files, and not everyone remembers to use the same with "kmk clean".
+ OTHER_CLEAN += \
+ 	$(VBOX_XML_CATALOG) \
+ 	$(VBOX_XML_CATALOG_DOCBOOK) \
+ 	$(VBOX_XML_CATALOG_MANUAL) \
+ 	$(VBOX_XML_ENTITIES) \
+ 	$(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/, \
+ 	$(VBOX_XML_XREF_TO_TEXT) \
+ 	$(VBOX_XML_XREF_TO_TEXT).cat \
+ 	$(addprefix user_,$(VBOX_MANUAL_XML_REFENTRY_FILES)) \
+ 	$(VBOX_MANUAL_XML_REFENTRY_FILES) \
+ 	$(patsubst man_%,%.1,$(basename $(VBOX_MANUAL_XML_REFENTRY_FILES))) \
+ 	man_VBoxHeadless.xml \
+ 	user_man_VBoxHeadless.xml \
+ 	man_vboximg-mount.xml \
+ 	user_man_vboximg-mount.xml \
+ 	isomakercmd-man.xml \
+ 	user_isomakercmd-man.xml \
+ 	$(VBOX_MANUAL_LATEX_FILES_TARGET) \
+ 	$(VBOX_MANUAL_PNG_FILES_$(lang)) \
+ 	$(notdir $(VBOX_MANUAL_TEX_UNICODE_FILES)) \
+ 	$(addprefix HTMLHelp/,$(VBOX_MANUAL_PNG_FILES_$(lang))) \
+ 	$(addprefix qhelp/,   $(VBOX_MANUAL_PNG_FILES_$(lang))) \
+ 	html-single/UserManual.html \
+ 	$(addprefix qhelp/, UserManual.qhp UserManual.qhcp $(VBOX_QHELP_OUTPUT_FILES)) \
+ 	$(addprefix HTMLHelp/,    index.html go01.html) \
+ 	$(addprefix qhelp/,       index.html go01.html) \
+ 	$(addprefix html-chunks/, index.html go01.html) \
+ 	$(foreach n,01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 \
+ 	,html-chunks/ch$(n).html \
+ 	html-chunks/re$(n).html \
+ 	HTMLHelp/ch$(n).html \
+ 	HTMLHelp/re$(n).html \
+ 	$(foreach d2,0 1 2 3 4 5 6 7 8 9,$(foreach d1,0 1 2 3 4 5 6 7 8 9,HTMLHelp/ch$(n)s$(d2)$(d1).html)) \
+ 	qhelp/ch$(n).html \
+ 	qhelp/re$(n).html \
+ 	$(foreach d2,0 1 2 3 4 5 6 7 8 9,$(foreach d1,0 1 2 3 4 5 6 7 8 9,qhelp/ch$(n)s$(d2)$(d1).html)) ) \
+ 	$(foreach n,a b c \
+ 	,html-chunks/ap$(n).html \
+ 	HTMLHelp/ap$(n).html \
+ 	$(foreach s,01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20,HTMLHelp/ap$(n)s$(s).html) \
+ 	qhelp/ap$(n).html \
+ 	$(foreach s,01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20,qhelp/ap$(n)s$(s).html) ) \
+ 	$(foreach n,01 02 03 04 05 \
+ 	,html-chunks/pr$(n).html \
+ 	HTMLHelp/pr$(n).html \
+ 	$(foreach s,01 02 03 04 05 06 07 08,HTMLHelp/pr$(n)s$(s).html) \
+ 	qhelp/pr$(n).html \
+ 	$(foreach s,01 02 03 04 05 06 07 08,qhelp/pr$(n)s$(s).html) ) \
+ 	HTMLHelp/toc.hhc \
+ 	HTMLHelp/htmlhelp.hhp \
+ 	qhelp/toc.hhc \
+ 	qhelp/htmlhelp.hhp \
+ 	UserManual.pdf \
+ 	VirtualBox.chm \
+ 	$(VBOX_QHELP_OUTPUT_FILES) \
+ 	ChangeLog.html \
+ 	validatemanual.run \
+ 	validateaccessibility.run \
+ 	validatesdkref.run \
+ 	)) \
+ 	$(VBOX_PATH_MANUAL_OUTBASE)/titlepage-htmlhelp.xsl \
+ 	$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/overview_,$(VBOX_MANUAL_XML_REFENTRY_FILES)) \
+ 	$(foreach f,$(VBOX_MANUAL_ADD_LANGUAGES),$(PATH_STAGE_BIN)/UserManual_$(f).pdf) \
+ 	$(foreach f,$(VBOX_MANUAL_ADD_LANGUAGES),$(PATH_STAGE_BIN)/VirtualBox_$(f).chm) \
+ 	$(PATH_STAGE_BIN)/UserManual.pdf \
+ 	$(PATH_STAGE_BIN)/VirtualBox.chm \
+ 	\
+ 	$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/, \
+ 	$(VBOX_SDKREF_LATEX_FILES_TARGET) \
+ 	SDKRef.pdf \
+ 	) \
+ 	$(PATH_STAGE_BIN)/sdk/docs/SDKRef.pdf \
+ 	\
+ 	$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/, \
+ 	$(VBOX_ACCESSIBILITY_LATEX_FILES_TARGET) \
+ 	html-single/Accessibility.html \
+ 	Accessibility.pdf \
+ 	) \
+ 	$(PATH_STAGE_BIN)/Accessibility.html \
+ 	$(PATH_STAGE_BIN)/Accessibility.pdf \
+ 	\
+ 	$(VBOX_DOC_XIDL_SRC_TMP) \
+ 	$(VBOX_MANUAL_APIREF_TMP)
+
+endif # if defined(VBOX_WITH_DOCS) && (!defined(VBOX_ONLY_BUILD) || defined(VBOX_ONLY_DOCS) || defined(VBOX_ONLY_SDK))
+
+#
+# target for installing UserManual.pdf
+#
+VBox-docs-usermanual_INST = $(INST_BIN)
+VBox-docs-usermanual_MODE = a+r,u+w
+VBox-docs-usermanual_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/UserManual.pdf
+
+VBox-docs-usermanual-qhc_INST = $(INST_BIN)
+VBox-docs-usermanual-qhc_MODE = a+r,u+w
+VBox-docs-usermanual-qhc_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/qhelp/UserManual.qhc
+
+VBox-docs-usermanual-qch_INST = $(INST_BIN)
+VBox-docs-usermanual-qch_MODE = a+r,u+w
+VBox-docs-usermanual-qch_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/qhelp/UserManual.qch
+
+#
+# target for installing translated UserManual_*.pdf
+#
+VBox-docs-usermanual-l10n_INST = $(INST_BIN)
+VBox-docs-usermanual-l10n_MODE = a+r,u+w
+VBox-docs-usermanual-l10n_SOURCES = $(foreach f,$(VBOX_MANUAL_ADD_LANGUAGES),$(VBOX_PATH_MANUAL_OUTBASE)/$(f)/UserManual.pdf=>UserManual_$(f).pdf)
+
+#
+# target for installing the chunked HTML docs
+#
+VBox-docs-usermanual-html_INST = $(INST_BIN)
+VBox-docs-usermanual-html_MODE = a+r,u+w
+VBox-docs-usermanual-html_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/UserManual.zip=>UserManual-html.zip
+
+#
+# target for installing VirtualBox.chm
+#
+VBox-docs-usermanual-chm_INST = $(INST_BIN)
+VBox-docs-usermanual-chm_MODE = a+r,u+w
+VBox-docs-usermanual-chm_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/VirtualBox.chm
+
+#
+# target for installing translated VirtualBox_*.chm
+#
+VBox-docs-usermanual-l10n-chm_INST = $(INST_BIN)
+VBox-docs-usermanual-l10n-chm_MODE = a+r,u+w
+VBox-docs-usermanual-l10n-chm_SOURCES = $(foreach f,$(VBOX_MANUAL_ADD_LANGUAGES),$(VBOX_PATH_MANUAL_OUTBASE)/$(f)/VirtualBox.chm=>VirtualBox_$(f).chm)
+
+#
+# target for installing SDKRef.pdf
+#
+VBox-docs-sdkref_INST = $(INST_SDK)docs/
+VBox-docs-sdkref_MODE = a+r,u+w
+VBox-docs-sdkref_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/SDKRef.pdf
+
+#
+# target for installing Accessibility.pdf
+#
+VBox-docs-accessibility_INST = $(INST_BIN)
+VBox-docs-accessibility_MODE = a+r,u+w
+VBox-docs-accessibility_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/Accessibility.pdf
+
+#
+# target for installing Accessibility.html
+#
+VBox-docs-accessibility-html_INST = $(INST_BIN)
+VBox-docs-accessibility-html_MODE = a+r,u+w
+VBox-docs-accessibility-html_SOURCES = $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/Accessibility.html
+
+if defined(VBOX_WITH_DOCS) && (!defined(VBOX_ONLY_BUILD) || defined(VBOX_ONLY_DOCS) || defined(VBOX_ONLY_SDK))
+
+ ##
+ # Morph man pages into manual sections.
+ # $(evalcall2 def_vbox_refentry_to_user_sect1)
+ # @param    1  Language.
+ # @param    2  the refentry xml base file name.
+ # @param    3  the full refentry xml file path.
+ define def_vbox_refentry_to_user_sect1
+  $$(VBOX_PATH_MANUAL_OUTBASE)/$(1)/user_$(2): $(3) \
+  		$$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manual-sect1.xsl \
+  		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+  		$$(VBOX_XML_ENTITIES) $$(VBOX_VERSION_STAMP) | $$$$(dir $$$$@)
+	$$(call MSG_TOOL,xsltproc $$(notdir $$(filter %.xsl,$$^)),,$$(filter %.xml,$$^),$$@)
+	$$(QUIET)$$(RM) -f "$$@"
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --output $$@ $$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manual-sect1.xsl $$<
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(foreach file,$(VBOX_MANUAL_XML_REFENTRY_FILES) \
+man_VBoxHeadless.xml \
+man_vboximg-mount.xml \
+, $(evalcall2 def_vbox_refentry_to_user_sect1,$(lang),$(file),$(VBOX_PATH_MANUAL_SRC)/$(lang)/$(file))))
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES) \
+,$(evalcall2 def_vbox_refentry_to_user_sect1,$(lang),isomakercmd-man.xml,$(PATH_ROOT)/src/VBox/Runtime/common/fs/isomakercmd-man.xml))
+
+
+ # Generates the VBoxManage command overview include file (shared between
+ # languages) from the refsynopsisdiv section of the man pages.
+ $(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/overview_,$(VBOX_MANUAL_XML_REFENTRY_FILES)): \
+ 		$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manual-overview.xsl \
+ 		$$(patsubst overview_%,$$(VBOX_PATH_MANUAL_SRC)/en_US/%,$$(notdir $$@)) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(filter %.xsl,$^)),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) --output "$@" $< $(filter %.xml,$^)
+
+
+
+
+
+ ##########################################################################################
+ #
+ #  Shared rules for PDF generation
+ #
+ ##########################################################################################
+
+ ifndef VBOX_OSE
+  # copy ucs.sty and related files
+  $(foreach f,$(VBOX_MANUAL_LANGUAGES),$(VBOX_PATH_MANUAL_OUTBASE)/$f/ucs.sty):
+	$(call MSG_L1,Copying unicode support for LaTeX)
+	$(QUIET)$(INSTALL_STAGING) -m0644 -- $(VBOX_MANUAL_TEX_UNICODE_FILES) "$(@D)"
+ endif
+
+ # copy the PNG files.
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_cp_images_pdf
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+  $(addprefix $$(out_dir)/,$(VBOX_MANUAL_PNG_FILES_$(lang))): \
+  		$$(out_dir)/% : $(VBOX_PATH_MANUAL_SRC)/$(lang)/% | $$$$(dir $$$$@)
+	$$(call MSG_L1,Copying temporary $$< => $$@)
+	$$(QUIET)$$(INSTALL_STAGING) -m0644 -- '$$<' '$$(@D)'
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_cp_images_pdf))
+
+
+ ##########################################################################################
+ #
+ #  UserManual.pdf
+ #
+ ##########################################################################################
+
+
+ # Generate PDF from LaTeX
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_usermanual_tex_to_pdf
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+  $$(out_dir)/UserManual.pdf: \
+  		$$(out_dir)/UserManual.tex \
+  		$$(if $$(VBOX_OSE),,$$(out_dir)/ucs.sty) \
+  		$$(addprefix $$(out_dir)/,$$(VBOX_MANUAL_PNG_FILES_$(lang))) | $$$$(dir $$$$@)
+  # PDF generation via Latex: generate the .tex file
+	$$(call MSG_L1,pdflatex $$< (four passes) -> $$@)
+	$$(QUIET)$$(REDIRECT) -w+ti /dev/null -C $$(@D) -- $$(VBOX_PDFLATEX_CMD) UserManual.tex
+	$$(QUIET)$$(REDIRECT) -w+ti /dev/null -C $$(@D) -- $$(VBOX_PDFLATEX_CMD) UserManual.tex
+	$$(QUIET)$$(REDIRECT) -w+ti /dev/null -C $$(@D) -- $$(VBOX_PDFLATEX_CMD) UserManual.tex
+	$$(QUIET)$$(REDIRECT) -w+ti /dev/null -C $$(@D) -- $$(VBOX_PDFLATEX_CMD) UserManual.tex
+	$$(QUIET)$$(SED) -ne '/Warning: Hyper reference/p' $$(basename $$<).log
+	$$(QUIET)$$(SED) -n \
+		-e '/Warning: There were \(undefined references\|multiply-defined labels\)/{p; q 1}' \
+		$$(basename $$@).log
+	$$(call MSG_L1,Fresh LaTeX-generated PDF is now at $$@)
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_tex_to_pdf))
+
+ # Generate LaTeX from XML
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_usermanual_xml_to_tex
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+  $$(out_dir)/UserManual.tex: \
+  		$$(addprefix $$(VBOX_PATH_MANUAL_SRC)/$(lang)/,$$(VBOX_MANUAL_XML_FILES)) \
+  		$$(VBOX_MANUAL_XML_FILES_COMMON) \
+  		$$(VBOX_MANUAL_XML_FILES_GENERATED_$(lang)) \
+  		$$(VBOX_PATH_MANUAL_SRC)/docbook2latex.xsl \
+  		$$(if $$(VBOX_HAVE_XMLLINT),$$(out_dir)/validatemanual.run,) \
+  		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+  		$$(VBOX_XML_ENTITIES) $$(MAKEFILE_CURRENT) | $$$$(dir $$$$@)
+	$$(call MSG_TOOL,xsltproc $$(notdir $$(filter %.xsl,$$^)),,$$(firstword $$(filter %.xml,$$^)),$$@)
+	$$(QUIET)$$(RM) -f $$(addprefix $$(@D)/,$$(VBOX_MANUAL_LATEX_FILES_TARGET))
+  #   generate TeX source from processed docbook and store it in UserManual.tex.tmp;
+  #   pass current language to xsltproc in TARGETLANG variable
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --stringparam TARGETLANG $(lang) \
+		-o $$@.tmp $$(VBOX_PATH_MANUAL_SRC)/docbook2latex.xsl $$<
+  #   for pretty quotes, replace " with `` or '' depending on whether it's at the start of a word;
+  #   the \QUOTE{} was inserted by docbook2latex.xsl for all quotes _outside_ of screen sections
+	$$(QUIET)$$(SED) \
+		-e 's|^\\QUOTE{}|\\OQ{}|g' \
+		-e 's|\(\W\)\\QUOTE{}|\1\\OQ{}|g' \
+		-e 's|\(\w\)\\QUOTE{}|\1\\CQ{}|g' \
+		--output $$@ $$@.tmp
+	$$(QUIET)$$(RM) -f $$@.tmp
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_xml_to_tex))
+
+ # Useful aliases
+ usermanual UserManual.pdf:: $(PATH_STAGE_BIN)/UserManual.pdf
+
+ debug-usermanual:
+	$(MAKE) --pretty-command-printing -j1 VBOX_PDFLATEX_INTERACTION=errorstopmode $(PATH_STAGE_BIN)/UserManual.pdf
+
+ #
+ # Generate rules for validating the UserManual.xml.  These are invoked
+ # automatically at build time, but can also be manually invoked via the
+ # 'validatemanual' and 'validatemanual_<lang>' aliases.
+ #
+ define def_vbox_validate_xml
+  validatemanual_$(lang):: $$(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/validatemanual.run
+  $$(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/validatemanual.run: \
+  		$$(addprefix $$(VBOX_PATH_MANUAL_SRC)/$(lang)/,$$(VBOX_MANUAL_XML_FILES)) \
+  		$$(VBOX_MANUAL_XML_FILES_COMMON) \
+  		$$(VBOX_MANUAL_XML_FILES_GENERATED_$(lang)) \
+  		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+  		$$(VBOX_XML_ENTITIES) $$(MAKEFILE_CURRENT) | $$$$(dir $$$$@)
+	$$(call MSG_L1,Validating $$<)
+	$$(QUIET)$$(VBOX_XMLLINT_WITH_CAT) --dtdvalid $$(VBOX_PATH_DOCBOOK_DTD)/docbookx.dtd $$<
+	$$(QUIET)$$(APPEND) -t "$$@" "done"
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_validate_xml))
+
+
+ # Handy aliases.
+ validatemanual:: $(foreach lang,$(VBOX_MANUAL_LANGUAGES),validatemanual_$(lang))
+
+
+
+ #
+ # SDKRef.pdf
+ #
+
+ # Replace <tt> tags in VirtualBox.xidl.
+ $(VBOX_DOC_XIDL_SRC_TMP): $(VBOX_DOC_XIDL_SRC) $(MAKEFILE_CURRENT) | $$(dir $$@)
+	$(call MSG_L1,Generating $@)
+	$(QUIET)$(SED) -e 's|@a \+\(\w\+\)|<tt>\1</tt>|g' \
+	       -e 's|@c \+\(\w\+\)|<tt>\1</tt>|g' \
+	       --output $@ $<
+
+ # Generate SDKRef_apiref.xml as a docbook file excerpt that will be referenced from the SDKRef.xml.
+ $(VBOX_MANUAL_APIREF_TMP): $(VBOX_PATH_MANUAL_SRC)/xidl2docbook.xsl $(VBOX_DOC_XIDL_SRC_TMP)
+	$(call MSG_L1,Generating $@)
+	$(QUIET)$(VBOX_XSLTPROC) $(VBOX_XSLTPROC_OPTS) --xinclude --nonet -o $@ $< $(VBOX_DOC_XIDL_SRC_TMP)
+
+ # Turn SDKRef.xml into LaTeX.
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/SDKRef.tex: \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_SDKREF_XML_FILES)) \
+ 		$(VBOX_MANUAL_APIREF_TMP) \
+ 		$(VBOX_PATH_MANUAL_SRC)/docbook2latex.xsl \
+ 		$(if $(VBOX_HAVE_XMLLINT),$(VBOX_PATH_MANUAL_OUTBASE)/en_US/validatesdkref.run,) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) $(MAKEFILE_CURRENT) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(filter %.xsl,$^)),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(RM) -f $(addprefix $(@D/),$(VBOX_SDKREF_LATEX_FILES_TARGET))
+ #	generate TeX source from processed docbook and store it in SDKRef.tex.tmp
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) --stringparam TARGETLANG en_US \
+		-o $@.tmp $(VBOX_PATH_MANUAL_SRC)/docbook2latex.xsl $<
+ #	for pretty quotes, replace " with `` or '' depending on whether it's at the start of a word;
+ #   the \QUOTE{} was inserted by docbook2latex.xsl for all quotes _outside_ of screen sections
+	$(QUIET)$(SED) \
+		-e 's|^\\QUOTE{}|\\OQ{}|g' \
+		-e 's|\(\W\)\\QUOTE{}|\1\\OQ{}|g' \
+		-e 's|\(\w\)\\QUOTE{}|\1\\CQ{}|g' \
+		--output $@ $@.tmp
+	$(QUIET)$(RM) -f $@.tmp
+
+ # Turn SDKRef.tex into a PDF.
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/SDKRef.pdf: \
+ 		$(VBOX_PATH_MANUAL_OUTBASE)/en_US/SDKRef.tex \
+ 		$(if $(VBOX_OSE),,$(VBOX_PATH_MANUAL_OUTBASE)/en_US/ucs.sty) \
+ 		$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/,$(VBOX_MANUAL_PNG_FILES_en_US)) | $$(dir $$@)
+	$(call MSG_L1,pdflatex $< (three passes))
+	$(QUIET)$(REDIRECT) -C $(<D) -- $(VBOX_PDFLATEX_CMD) SDKRef.tex
+	$(QUIET)$(REDIRECT) -C $(<D) -- $(VBOX_PDFLATEX_CMD) SDKRef.tex
+	$(QUIET)$(REDIRECT) -C $(<D) -- $(VBOX_PDFLATEX_CMD) SDKRef.tex
+	$(QUIET)$(SED) -ne '/Warning: Hyper reference/p' $(basename $<).log
+	$(QUIET)$(SED) -n \
+		-e '/Warning: There were \(undefined references\|multiply-defined labels\)/{p; q 1}' \
+		$(basename $<).log
+	$(call MSG_L1,Fresh LaTeX-generated PDF is now at $@)
+
+ # Validating SDKRef.xml. It is invoked automatically at build time,
+ # but can also be manually invoked via the 'validate-sdkref' alias.
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/validatesdkref.run: \
+ 		$(VBOX_PATH_MANUAL_SRC)/en_US/SDKRef.xml \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_SDKREF_XML_FILES)) \
+ 		$(VBOX_MANUAL_APIREF_TMP) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) $(MAKEFILE_CURRENT) | $$(dir $$@)
+	$(call MSG_L1,Validating $<)
+	$(QUIET)$(VBOX_XMLLINT_WITH_CAT) --dtdvalid $(VBOX_PATH_DOCBOOK_DTD)/docbookx.dtd $<
+	$(QUIET)$(APPEND) -t "$@" "done"
+
+
+ # Handy aliases.
+ validate-sdkref:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/validatesdkref.run
+ sdkref:: $(PATH_STAGE_BIN)/sdk/docs/SDKRef.pdf
+
+
+
+ #
+ # Accessibility.pdf
+ #
+
+ # Turn Accessibility.xml into LaTeX.
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/Accessibility.tex: \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_ACCESSIBILITY_XML_FILES)) \
+ 		$(VBOX_PATH_MANUAL_SRC)/docbook2latex.xsl \
+ 		$(if $(VBOX_HAVE_XMLLINT),$(VBOX_PATH_MANUAL_OUTBASE)/en_US/validateaccessibility.run,) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) $(MAKEFILE_CURRENT) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(filter %.xsl,$^)),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(RM) -f $(addprefix $(@D/),$(VBOX_ACCESSIBILITY_LATEX_FILES_TARGET))
+ #	generate TeX source from processed docbook and store it in Accessibility.tex.tmp
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) --stringparam TARGETLANG en_US \
+		-o $@.tmp $(VBOX_PATH_MANUAL_SRC)/docbook2latex.xsl $<
+ #	for pretty quotes, replace " with `` or '' depending on whether it's at the start of a word;
+ #   the \QUOTE{} was inserted by docbook2latex.xsl for all quotes _outside_ of screen sections
+	$(QUIET)$(SED) \
+		-e 's|^\\QUOTE{}|\\OQ{}|g' \
+		-e 's|\(\W\)\\QUOTE{}|\1\\OQ{}|g' \
+		-e 's|\(\w\)\\QUOTE{}|\1\\CQ{}|g' \
+		--output $@ $@.tmp
+	$(QUIET)$(RM) -f $@.tmp
+
+ # Turn Accessibility.tex into a PDF.
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/Accessibility.pdf: \
+ 		$(VBOX_PATH_MANUAL_OUTBASE)/en_US/Accessibility.tex \
+ 		$(if $(VBOX_OSE),,$(VBOX_PATH_MANUAL_OUTBASE)/en_US/ucs.sty) \
+ 		$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/,$(VBOX_MANUAL_PNG_FILES_en_US)) | $$(dir $$@)
+	$(call MSG_L1,pdflatex $< (three passes))
+	$(QUIET)$(REDIRECT) -C $(<D) -- $(VBOX_PDFLATEX_CMD) Accessibility.tex
+	$(QUIET)$(REDIRECT) -C $(<D) -- $(VBOX_PDFLATEX_CMD) Accessibility.tex
+	$(QUIET)$(REDIRECT) -C $(<D) -- $(VBOX_PDFLATEX_CMD) Accessibility.tex
+	$(QUIET)$(SED) -ne '/Warning: Hyper reference/p' $(basename $<).log
+	$(QUIET)$(SED) -n \
+		-e '/Warning: There were \(undefined references\|multiply-defined labels\)/{p; q 1}' \
+		$(basename $<).log
+	$(call MSG_L1,Fresh LaTeX-generated PDF is now at $@)
+
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/Accessibility.html: \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_ACCESSIBILITY_XML_FILES)) \
+ 		$(VBOX_DOCBOOK_HTML_ONE_PAGE_FORMATCFG) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(firstword $(filter %.xsl,$^))),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) \
+		--output $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/Accessibility.html \
+		$(VBOX_PATH_MANUAL_SRC)/docbook-html-one-page-formatcfg.xsl \
+		$<
+
+ # Validating Accessibility.xml. It is invoked automatically at build time,
+ # but can also be manually invoked via the 'validate-accessibility' alias.
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/validateaccessibility.run: \
+ 		$(VBOX_PATH_MANUAL_SRC)/en_US/Accessibility.xml \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_ACCESSIBILITY_XML_FILES)) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) $(MAKEFILE_CURRENT) | $$(dir $$@)
+	$(call MSG_L1,Validating $<)
+	$(QUIET)$(VBOX_XMLLINT_WITH_CAT) --dtdvalid $(VBOX_PATH_DOCBOOK_DTD)/docbookx.dtd $<
+	$(QUIET)$(APPEND) -t "$@" "done"
+
+
+ # Handy aliases.
+ validate-accessibility:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/validateaccessibility.run
+ accessibility:: $(PATH_STAGE_BIN)/Accessibility.pdf
+ accessibility-html:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/Accessibility.html
+
+
+ # A few things which are shared between htmlhelp and qhelp docs.
+ VBOX_DOCBOOK_HTMLHELP_FORMATCFG = \
+ 	$(VBOX_PATH_MANUAL_SRC)/docbook-htmlhelp-formatcfg.xsl \
+ 	$(VBOX_PATH_MANUAL_SRC)/common-formatcfg.xsl \
+ 	$(VBOX_PATH_MANUAL_SRC)/common-html-formatcfg.xsl
+
+ # Prepare the XSL file for our title page, htmlhelp and qhelp variant.
+ $(VBOX_PATH_MANUAL_OUTBASE)/titlepage-htmlhelp.xsl: \
+ 		$(VBOX_PATH_MANUAL_SRC)/titlepage-htmlhelp.xml $(MAKEFILE_CURRENT) | $$(dir $$@)
+	$(call MSG_L1,xsltproc $<)
+	$(QUIET)$(RM) -f $@.tmp $@
+	$(QUIET)$(VBOX_XSLTPROC) --xinclude --nonet -o $@.tmp $(VBOX_PATH_DOCBOOK)/template/titlepage.xsl $<
+	$(QUIET)$(MV) -f $@.tmp $@
+
+
+ ifdef VBOX_WITH_DOCS_CHM
+  #
+  # VirtualBox.chm
+  #
+  # We first generate a .hhp help source file from the preprocessed
+  # DocBook XML files, as defined above, then feed that into the
+  # Microsoft Help Compiler.
+
+  # Generate CHM from HHP
+  # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+  define def_vbox_usermanual_hhp_to_chm
+   local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+   $$(out_dir)/VirtualBox.chm: \
+   		$$(out_dir)/HTMLHelp/htmlhelp.hhp \
+   		$$(addprefix $$(out_dir)/HTMLHelp/,$$(VBOX_MANUAL_PNG_FILES_$(lang))) \
+   		| $$$$(dir $$$$@)
+	$$(call MSG_L1,hhc $$<,=> $$@)
+	$$(QUIET)$$(RM) -f $$@
+	$$(QUIET)$$(VBOX_HHC) $$(subst /,\\,$$<)
+	$$(call MSG_L1,Fresh CHM is now at $$@)
+  endef
+  $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_hhp_to_chm))
+
+  # Generate HHP from XML
+  # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+  define def_vbox_usermanual_xml_to_hhp
+   local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+   $$(out_dir)/HTMLHelp/htmlhelp.hhp: \
+   		$$(addprefix $$(VBOX_PATH_MANUAL_SRC)/$(lang)/,$$(VBOX_MANUAL_XML_FILES)) \
+   		$$(VBOX_MANUAL_XML_FILES_COMMON) \
+   		$$(VBOX_MANUAL_XML_FILES_GENERATED_$(lang)) \
+   		$$(VBOX_DOCBOOK_HTMLHELP_FORMATCFG) \
+   		$$(VBOX_PATH_MANUAL_OUTBASE)/titlepage-htmlhelp.xsl \
+   		$$(if $$(VBOX_HAVE_XMLLINT),$$(out_dir)/validatemanual.run,) \
+   		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+   		$$(VBOX_XML_ENTITIES) | $$$$(dir $$$$@)
+	$$(call MSG_TOOL,xsltproc $$(notdir $$(firstword $$(filter %.xsl,$$^))),,$$(firstword $$(filter %.xml,$$^)),$$@)
+	$$(QUIET)$$(RM) -f $$@
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --output $$(@D)/ \
+		--stringparam htmlhelp.chm \
+		$$(subst /,\\,$$(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/VirtualBox.chm) \
+		$$(HTMLHELPOPTS) $$(VBOX_PATH_MANUAL_SRC)/docbook-htmlhelp-formatcfg.xsl \
+		$$<
+  endef
+  $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_xml_to_hhp))
+
+  # copy the PNG files.
+  # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+  define def_vbox_cp_images_htmlhelp
+   local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/HTMLHelp
+   $(addprefix $$(out_dir)/,$(VBOX_MANUAL_PNG_FILES_$(lang))): \
+   		$$(out_dir)/% : $(VBOX_PATH_MANUAL_SRC)/$(lang)/% | $$$$(dir $$$$@)
+	$$(call MSG_L1,Copying temporary $$< => $$@)
+	$$(QUIET)$$(INSTALL_STAGING) -m0644 -- '$$<' '$$(@D)'
+  endef
+  $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(eval $(def_vbox_cp_images_htmlhelp)))
+
+ endif # VBOX_WITH_DOCS_CHM
+
+
+ # Packing the docs into a zip file
+ $(PATH_STAGE_BIN)/VBoxDocumentation.zip: $(VBOX_MANUAL_PACK)
+	$(call MSG_L1,Packing documentation $@)
+	$(QUIET)$(RM) -f $@
+	$(QUIET)$(REDIRECT) -C $(PATH_STAGE_BIN) -- $(VBOX_ZIP) -9 $@ $(notdir $^)
+
+
+ ##########################################################################################
+ #
+ #  UserManual.html
+ #
+ ##########################################################################################
+ VBOX_DOCBOOK_HTML_ONE_PAGE_FORMATCFG = \
+ 	$(VBOX_PATH_MANUAL_SRC)/docbook-html-one-page-formatcfg.xsl \
+ 	$(VBOX_PATH_MANUAL_SRC)/common-formatcfg.xsl \
+ 	$(VBOX_PATH_MANUAL_SRC)/common-html-formatcfg.xsl
+
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/UserManual.html: \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_MANUAL_XML_FILES)) \
+ 		$(VBOX_MANUAL_XML_FILES_COMMON) \
+ 		$(VBOX_MANUAL_XML_FILES_GENERATED_en_US) \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_MANUAL_PNG_FILES_en_US)) \
+ 		$(VBOX_DOCBOOK_HTML_ONE_PAGE_FORMATCFG) \
+ 		$(if $(VBOX_HAVE_XMLLINT),$(VBOX_PATH_MANUAL_OUTBASE)/en_US/validatemanual.run,) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(firstword $(filter %.xsl,$^))),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) \
+		--output $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/UserManual.html \
+		$(VBOX_PATH_MANUAL_SRC)/docbook-html-one-page-formatcfg.xsl \
+		$<
+
+ VBOX_DOCBOOK_HTML_CHUNKS_FORMATCFG = \
+ 	$(VBOX_PATH_MANUAL_SRC)/docbook-html-chunks-formatcfg.xsl \
+ 	$(VBOX_PATH_MANUAL_SRC)/common-formatcfg.xsl \
+ 	$(VBOX_PATH_MANUAL_SRC)/common-html-formatcfg.xsl
+
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-chunks/index.html: \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_MANUAL_XML_FILES)) \
+ 		$(VBOX_MANUAL_XML_FILES_COMMON) \
+ 		$(VBOX_MANUAL_XML_FILES_GENERATED_en_US) \
+ 		$(VBOX_DOCBOOK_HTML_CHUNKS_FORMATCFG) \
+ 		$(addprefix $(VBOX_PATH_MANUAL_SRC)/en_US/,$(VBOX_MANUAL_PNG_FILES_en_US)) \
+ 		$(if $(VBOX_HAVE_XMLLINT),$(VBOX_PATH_MANUAL_OUTBASE)/en_US/validatemanual.run,) \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(firstword $(filter %.xsl,$^))),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) \
+		--output $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-chunks/index.html \
+		--stringparam chunk.section.depth 0 \
+		$(VBOX_PATH_MANUAL_SRC)/docbook-html-chunks-formatcfg.xsl \
+		$<
+
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/UserManual.zip: \
+ 		$(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/UserManual.html \
+ 		$(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-chunks/index.html \
+ 		$(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/,$(VBOX_MANUAL_PNG_FILES_en_US))
+	$(call MSG_L1,Packing documentation $@)
+	$(QUIET)$(RM) -f $@
+	$(QUIET)$(REDIRECT) -C $(VBOX_PATH_MANUAL_OUTBASE)/en_US/ -- $(VBOX_ZIP) \
+		-9 -r $@ html-single html-chunks $(VBOX_MANUAL_PNG_FILES_en_US)
+
+ html:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-single/UserManual.html
+ html:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/html-chunks/index.html
+ qhelp:: $(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/qhelp/, $(VBOX_QHELP_OUTPUT_FILES))
+ html-zip:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/UserManual.zip
+
+ #
+ # ChangeLog.html
+ #
+ # This XSLT rule formats en_US/user_ChangeLog.xml (which includes the actual change log
+ # contained in user_ChangeLogImpl.xml) as a standalone HTML file.
+ #
+ $(VBOX_PATH_MANUAL_OUTBASE)/en_US/ChangeLog.html: \
+ 		$(VBOX_PATH_MANUAL_SRC)/en_US/docbook-changelog-formatcfg.xsl \
+ 		$(VBOX_PATH_MANUAL_OUTBASE)/en_US/user_ChangeLog.xml \
+ 		$(VBOX_XML_CATALOG) $(VBOX_XML_CATALOG_DOCBOOK) $(VBOX_XML_CATALOG_MANUAL) \
+ 		$(VBOX_XML_ENTITIES) | $$(dir $$@)
+	$(call MSG_TOOL,xsltproc $(notdir $(firstword $(filter %.xsl,$^))),,$(firstword $(filter %.xml,$^)),$@)
+	$(QUIET)$(call VBOX_XSLTPROC_WITH_CAT) --output "$@" "$<" $(filter %.xml,$^)
+	$(call MSG_L1,Fresh ChangeLog.html is now at $@)
+
+ cl-html:: $(VBOX_PATH_MANUAL_OUTBASE)/en_US/ChangeLog.html
+
+
+
+endif # if defined(VBOX_WITH_DOCS) && (!defined(VBOX_ONLY_BUILD) || defined(VBOX_ONLY_DOCS) || defined(VBOX_ONLY_SDK))
+
+
+#
+# VBoxManage man pages (parts also required by VBoxManage built-in help).
+#
+
+##
+# Emits rules for preprocessing refentry sources (applying remarks element),
+# and for producing the actual man pages.
+# $(evalcall2 def_vbox_refentry_to_manpage)
+# @param    1   The language
+# @param    2   The file name (no path).
+define def_vbox_refentry_to_manpage
+ $$(VBOX_PATH_MANUAL_OUTBASE)/$(1)/$(2): \
+ 		$$(VBOX_PATH_MANUAL_SRC)/$(1)/$(2) \
+ 		$$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manpage-preprocessing.xsl \
+ 		$$(VBOX_PATH_MANUAL_OUTBASE)/$(1)/$$(VBOX_XML_XREF_TO_TEXT) \
+ 		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+ 		$$(VBOX_XML_ENTITIES) $$(VBOX_VERSION_STAMP) | $$$$(dir $$$$@)
+	$$(call MSG_TOOL,xsltproc $$(notdir $$(firstword $$(filter %.xsl,$$^))),,$$(firstword $$(filter %.xml,$$^)),$$@)
+	$$(QUIET)$$(RM) -f "$$@"
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --output $$@ \
+		$$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manpage-preprocessing.xsl $$<
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --output $$@.tmp $$(VBOX_PATH_MANUAL_OUTBASE)/$(1)/$$(VBOX_XML_XREF_TO_TEXT) $$@
+	$$(QUIET)$$(MV) -f -- "$$@.tmp" "$$@"
+ if defined(VBOX_HAVE_XMLLINT)
+	$$(VBOX_XMLLINT_WITH_CAT) --dtdvalid $$(VBOX_PATH_DOCBOOK_DTD)/docbookx.dtd $$@
+ endif
+
+ $$(VBOX_PATH_MANUAL_OUTBASE)/$(1)/$(patsubst man_%,%.1,$(basename $(2))): \
+ 		$$(VBOX_PATH_MANUAL_OUTBASE)/$(1)/$(2) \
+ 		$$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manpage.xsl \
+ 		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+ 		$$(VBOX_XML_ENTITIES) $$(VBOX_VERSION_STAMP) | $$$$(dir $$$$@)
+	$$(call MSG_TOOL,xsltproc $$(notdir $$(firstword $$(filter %.xsl,$$^))),,$$(firstword $$(filter %.xml,$$^)),$$@)
+	$$(QUIET)$$(RM) -f "$$@"
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --maxdepth 6000 --output $$@ $$(VBOX_PATH_MANUAL_SRC)/docbook-refentry-to-manpage.xsl $$<
+endef
+$(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(foreach file,$(VBOX_MANUAL_XML_REFENTRY_FILES) \
+, $(evalcall2 def_vbox_refentry_to_manpage,$(lang),$(file))))
+
+
+ifdef VBOX_WITH_DOCS_QHELP
+ #
+ # VirtualBox.qch/VirtualBox.qhc
+ #
+ # We first generate a .hhp help source file from the preprocessed
+ # DocBook XML files, as defined above, then feed that into a converter
+ # creating the suitable input for creating a QHelp collection file.
+
+ # Generate QCH from QHelp source
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_usermanual_qhp_to_qch
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+  $$(out_dir)/qhelp/UserManual.qch + \
+  $$(out_dir)/qhelp/UserManual.qhc: \
+  		$$(out_dir)/qhelp/UserManual.qhcp \
+  		$$(out_dir)/qhelp/UserManual.qhp \
+  		$$(addprefix $$(out_dir)/qhelp/,$$(VBOX_MANUAL_PNG_FILES_$(lang))) \
+  		| $$$$(dir $$$$@)
+	$$(call MSG_L1,$$(notdir $$(QHELPGENERATOR)) $$<,=> $$@)
+	$$(QUIET)$$(RM) -f $$@
+	$$(QUIET)$$(REDIRECT) -E QT_QPA_PLATFORM_PLUGIN_PATH=$$(PATH_SDK_QT5)/plugins -- $$(QHELPGENERATOR) $$<
+	$$(call MSG_L1,Fresh QCH is now at $$@)
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_qhp_to_qch))
+
+ # Generate QHP from HHP for QHelp
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_usermanual_hhp_qhelp_to_qhp
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+  $$(out_dir)/qhelp/UserManual.qhp: \
+  		$$(out_dir)/qhelp/htmlhelp.hhp \
+  		$$(addprefix $$(out_dir)/qhelp/,$$(VBOX_MANUAL_PNG_FILES_$(lang))) \
+  		| $$$$(dir $$$$@)
+	$$(call MSG_L1,htmlhelp-qthelp.py $$<,=> $$@)
+	$$(QUIET)$$(RM) -f $$@
+	$$(QUIET)$$(VBOX_BLD_PYTHON) $$(VBOX_PATH_MANUAL_SRC)/htmlhelp-qthelp.py -d $$(<D) -o $$@
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_hhp_qhelp_to_qhp))
+
+ # Generate HHP for QHelp from XML
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_usermanual_xml_to_hhp_qhelp
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)
+  $$(out_dir)/qhelp/htmlhelp.hhp: \
+  		$$(addprefix $$(VBOX_PATH_MANUAL_SRC)/$(lang)/,$$(VBOX_MANUAL_XML_FILES)) \
+  		$$(VBOX_MANUAL_XML_FILES_COMMON) \
+  		$$(VBOX_MANUAL_XML_FILES_GENERATED_$(lang)) \
+  		$$(VBOX_DOCBOOK_HTMLHELP_FORMATCFG) \
+  		$$(VBOX_PATH_MANUAL_OUTBASE)/titlepage-htmlhelp.xsl \
+  		$$(if $$(VBOX_HAVE_XMLLINT),$$(out_dir)/validatemanual.run,) \
+  		$$(VBOX_XML_CATALOG) $$(VBOX_XML_CATALOG_DOCBOOK) $$(VBOX_XML_CATALOG_MANUAL) \
+  		$$(VBOX_XML_ENTITIES) | $$$$(dir $$$$@)
+	$$(call MSG_TOOL,xsltproc $$(notdir $$(firstword $$(filter %.xsl,$$^))),,$$(firstword $$(filter %.xml,$$^)),$$@)
+	$$(QUIET)$$(RM) -f $$@
+	$$(QUIET)$$(call VBOX_XSLTPROC_WITH_CAT) --output $$(@D)/ \
+		--stringparam htmlhelp.chm \
+		$$(subst /,\\,$$(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/VirtualBox.chm) \
+		$$(HTMLHELPOPTS) $$(VBOX_PATH_MANUAL_SRC)/docbook-htmlhelp-formatcfg.xsl \
+		$$<
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(evalcall2 def_vbox_usermanual_xml_to_hhp_qhelp))
+
+ # copy the qhcp file.
+ define def_vbox_cp_qhcp
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/qhelp
+  $$(out_dir)/UserManual.qhcp: \
+  		$$(out_dir)/% : $(VBOX_PATH_MANUAL_SRC)/% | $$$$(dir $$$$@)
+	$$(QUIET)$$(INSTALL_STAGING) -m0644 -- '$$<' '$$(@D)'
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(eval $(def_vbox_cp_qhcp)))
+
+ # copy the PNG files.
+ # Note: out_dir needs to be referenced with an escaped $ so it doesn't expand as eval expands it input.
+ define def_vbox_cp_images_qhelp
+  local out_dir := $(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/qhelp
+  $(addprefix $$(out_dir)/,$(VBOX_MANUAL_PNG_FILES_$(lang))): \
+  		$$(out_dir)/% : $(VBOX_PATH_MANUAL_SRC)/$(lang)/% | $$$$(dir $$$$@)
+	$$(call MSG_L1,Copying temporary $$< => $$@)
+	$$(QUIET)$$(INSTALL_STAGING) -m0644 -- '$$<' '$$(@D)'
+ endef
+ $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(eval $(def_vbox_cp_images_qhelp)))
+
+endif # VBOX_WITH_DOCS_QHELP
+
+
+# Handy aliases.
+validate-manpages:: $(addprefix $(VBOX_PATH_MANUAL_OUTBASE)/en_US/,$(VBOX_MANUAL_XML_REFENTRY_FILES))
+man-experiment:: $(foreach lang,$(VBOX_MANUAL_LANGUAGES),$(foreach file,$(VBOX_MANUAL_XML_REFENTRY_FILES) \
+				,$$(VBOX_PATH_MANUAL_OUTBASE)/$(lang)/$(patsubst man_%,%.1,$(basename $(file)))))
+
+#
+# Manually updating the DHCP option list taken from VirtualBox.xidl
+#
+dhcpoptions: $(PATH_ROOT)/doc/manual/en_US/man_VBoxManage-dhcpserver-dhcpoptions.xsl \
+		$(PATH_ROOT)/src/VBox/Main/idl/VirtualBox.xidl
+	$(call VBOX_XSLTPROC) --output "$(PATH_ROOT)/doc/manual/en_US/man_VBoxManage-dhcpserver-dhcpoptions.xml" $+
+
+
+include $(FILE_KBUILD_SUB_FOOTER)
+