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diff --git a/doc/manual/docbook-refentry-to-manual-overview.xsl b/doc/manual/docbook-refentry-to-manual-overview.xsl
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+<?xml version="1.0"?>
+<!--
+ docbook-refentry-to-manual-sect1.xsl:
+ XSLT stylesheet for nicking the refsynopsisdiv bit of a
+ refentry (manpage) for use in the command overview section
+ in the user manual.
+-->
+<!--
+ Copyright (C) 2006-2022 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
+-->
+
+<xsl:stylesheet
+ version="1.0"
+ xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+ >
+
+ <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
+ <xsl:strip-space elements="*"/>
+
+
+<!-- Base operation is to copy. -->
+<xsl:template match="node()|@*">
+ <xsl:copy>
+ <xsl:apply-templates select="node()|@*"/>
+ </xsl:copy>
+</xsl:template>
+
+<!--
+ The refentry element is the top level one. We only process the
+ refsynopsisdiv sub element within it, since that is all we want.
+ -->
+<xsl:template match="refentry">
+ <xsl:apply-templates select="refsynopsisdiv"/>
+</xsl:template>
+
+<!--
+ Combine all cmdsynopsis lines into a bunch of commands.
+ -->
+<xsl:template match="refsynopsisdiv">
+ <xsl:if test="not(cmdsynopsis)">
+ <xsl:message terminate="yes">What? No cmdsynopsis in the refsynopsisdiv?</xsl:message>
+ </xsl:if>
+ <xsl:element name="cmdsynopsis">
+ <xsl:attribute name="id"><xsl:value-of select="/refentry/@id"/><xsl:text>-overview</xsl:text></xsl:attribute>
+ <xsl:for-each select="cmdsynopsis">
+ <xsl:copy-of select="node()"/>
+ </xsl:for-each>
+ </xsl:element>
+</xsl:template>
+
+<!-- Remove all remarks (for now). -->
+<xsl:template match="remark"/>
+
+
+</xsl:stylesheet>
+