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diff --git a/sw/source/core/inc/SwGrammarMarkUp.hxx b/sw/source/core/inc/SwGrammarMarkUp.hxx
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+++ b/sw/source/core/inc/SwGrammarMarkUp.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_SW_SOURCE_CORE_INC_SWGRAMMARMARKUP_HXX
+#define INCLUDED_SW_SOURCE_CORE_INC_SWGRAMMARMARKUP_HXX
+
+#include "wrong.hxx"
+#include <vector>
+
+/* SwGrammarMarkUp extends the functionality of a "normal" SwWrongList by memorizing
+   the start positions of sentences in the paragraph
+
+   The whole class is only a temporary solution without usage of virtual functions.
+   At the end the whole SwWrongList stuff should be reworked and replaced by interfaces
+   to deal with all the different wronglists like
+    spell, grammar, smarttag, sentence...
+   "MarkUpList" would be a better name than WrongList.
+*/
+
+class SwGrammarMarkUp : public SwWrongList
+{
+    std::vector< sal_Int32 > maSentence;
+
+public:
+    SwGrammarMarkUp() : SwWrongList( WRONGLIST_GRAMMAR ) {}
+
+    virtual ~SwGrammarMarkUp() override;
+    virtual SwWrongList* Clone() override;
+    virtual void CopyFrom( const SwWrongList& rCopy ) override;
+
+    /* SwWrongList::Move() + handling of maSentence */
+    void MoveGrammar( sal_Int32 nPos, sal_Int32 nDiff );
+    /* SwWrongList::SplitList() + handling of maSentence */
+    SwGrammarMarkUp* SplitGrammarList( sal_Int32 nSplitPos );
+    /* SwWrongList::JoinList() + handling of maSentence */
+    void JoinGrammarList( SwGrammarMarkUp* pNext, sal_Int32 nInsertPos );
+    /* SwWrongList::ClearList() + handling of maSentence */
+    void ClearGrammarList( sal_Int32 nSentenceEnd = COMPLETE_STRING );
+    /* setSentence to define the start position of a sentence,
+       at the moment the end position is given by the next start position */
+    void setSentence( sal_Int32 nStart );
+    /* getSentenceStart returns the last start position of a sentence
+       which is lower or equal to the given parameter */
+    sal_Int32 getSentenceStart( sal_Int32 nPos );
+    /* getSentenceEnd returns the first start position of a sentence
+       which is greater than the given parameter */
+    sal_Int32 getSentenceEnd( sal_Int32 nPos );
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */