diff -r 5dc02b23752f -r 3e2da88830cd src/gui/text/qtextoption.cpp
--- a/src/gui/text/qtextoption.cpp	Tue Jul 06 15:10:48 2010 +0300
+++ b/src/gui/text/qtextoption.cpp	Wed Aug 18 10:37:55 2010 +0300
@@ -65,7 +65,7 @@
       tab(-1),
       d(0)
 {
-    direction = QApplication::layoutDirection();
+    direction = Qt::LayoutDirectionAuto;
 }
 
 /*!
@@ -145,7 +145,7 @@
 
     \sa tabArray(), setTabStop(), setTabs()
 */
-void QTextOption::setTabArray(QList<qreal> tabStops)
+void QTextOption::setTabArray(QList<qreal> tabStops) // Qt5: const ref
 {
     if (!d)
         d = new QTextOptionPrivate;
@@ -165,7 +165,7 @@
 
     \sa tabStops()
 */
-void QTextOption::setTabs(QList<QTextOption::Tab> tabStops)
+void QTextOption::setTabs(QList<QTextOption::Tab> tabStops) // Qt5: const ref
 {
     if (!d)
         d = new QTextOptionPrivate;
@@ -391,6 +391,17 @@
 */
 
 /*!
+    \fn Tab::Tab(qreal pos, TabType tabType, QChar delim = QChar())
+    
+    Creates a tab with the given position, tab type, and delimiter
+    (\a pos, \a tabType, \a delim).
+
+    \note \a delim is only used when \a tabType is DelimiterTab.
+
+    \since 4.7
+*/
+
+/*!
     \fn bool Tab::operator==(const Tab &other) const
 
     Returns true if tab \a other is equal to this tab;