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diff --git a/src/gui/graphicsview/qgraphicsscenelinearindex.cpp b/src/gui/graphicsview/qgraphicsscenelinearindex.cpp
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+++ b/src/gui/graphicsview/qgraphicsscenelinearindex.cpp
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+/*!
+    \class QGraphicsSceneLinearIndex
+    \brief The QGraphicsSceneLinearIndex class provides an implementation of
+    a linear indexing algorithm for discovering items in QGraphicsScene.
+    \since 4.6
+    \ingroup multimedia
+    \ingroup graphicsview-api
+    \mainclass
+    \internal
+
+    QGraphicsSceneLinearIndex index is default linear implementation to discover items.
+    It basically store all items in a list and return them to the scene.
+
+    \sa QGraphicsScene, QGraphicsView, QGraphicsSceneIndex, QGraphicsSceneBspTreeIndex
+*/
+
+#include <private/qgraphicsscenelinearindex_p.h>
+
+/*!
+    \fn QGraphicsSceneLinearIndex::QGraphicsSceneLinearIndex(QGraphicsScene *scene = 0):
+
+    Construct a linear index for the given \a scene.
+*/
+
+/*!
+    \fn QList<QGraphicsItem *> QGraphicsSceneLinearIndex::items(Qt::SortOrder order = Qt::AscendingOrder) const;
+
+    Return all items in the index and sort them using \a order.
+*/
+
+
+/*!
+    \fn virtual QList<QGraphicsItem *> QGraphicsSceneLinearIndex::estimateItems(const QRectF &rect, Qt::SortOrder order) const;
+
+    Returns an estimation visible items that are either inside or
+    intersect with the specified \a rect and return a list sorted using \a order.
+*/
+
+/*!
+    \fn QRectF QGraphicsSceneLinearIndex::indexedRect() const;
+    \reimp
+    Return the rect indexed by the the index.
+*/
+
+/*!
+    \fn void QGraphicsSceneLinearIndex::clear();
+    \reimp
+    Clear the all the BSP index.
+*/
+
+/*!
+    \fn virtual void QGraphicsSceneLinearIndex::addItem(QGraphicsItem *item);
+
+    Add the \a item into the index.
+*/
+
+/*!
+    \fn virtual void QGraphicsSceneLinearIndex::removeItem(QGraphicsItem *item);
+
+    Add the \a item from the index.
+*/
+