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diff --git a/include/unotools/fontcvt.hxx b/include/unotools/fontcvt.hxx
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+++ b/include/unotools/fontcvt.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_UNOTOOLS_FONTCVT_HXX
+#define INCLUDED_UNOTOOLS_FONTCVT_HXX
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <unotools/unotoolsdllapi.h>
+#include <rtl/ustring.hxx>
+
+
+enum class FontToSubsFontFlags
+{
+    IMPORT                   = 0x01,
+    EXPORT                   = 0x02
+};
+
+typedef void* FontToSubsFontConverter;
+UNOTOOLS_DLLPUBLIC FontToSubsFontConverter     CreateFontToSubsFontConverter( std::u16string_view rFontName, FontToSubsFontFlags nFlags );
+UNOTOOLS_DLLPUBLIC sal_Unicode                 ConvertFontToSubsFontChar( FontToSubsFontConverter hConverter, sal_Unicode c );
+UNOTOOLS_DLLPUBLIC OUString                    GetFontToSubsFontName( FontToSubsFontConverter hConverter );
+
+
+class UNOTOOLS_DLLPUBLIC StarSymbolToMSMultiFont
+{
+public:
+    // Returns the name of the best windows symbol font which this char can be
+    // mapped to. Sets rChar to the correct position for that font. If no
+    // match found, then no name is returned, and rChar is unchanged. If you
+    // want to convert a string, you don't want to use this.
+    virtual OUString ConvertChar(sal_Unicode &rChar) = 0;
+
+    virtual ~StarSymbolToMSMultiFont() {}
+};
+
+
+// The converter will allow somewhat dubious mappings to the windows symbols fonts,
+// that are nevertheless recognizably similar. Even in this mode there will be characters that fail.
+// The users of this might want to make a distinction between failed characters
+// which were inside and those outside the unicode private area.
+UNOTOOLS_DLLPUBLIC StarSymbolToMSMultiFont *CreateStarSymbolToMSMultiFont();
+
+#endif // INCLUDED_UNOTOOLS_FONTCVT_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */