diff --git a/src/GUI/elevationgraph.cpp b/src/GUI/elevationgraph.cpp
index 616c66ed..7f2101f7 100644
--- a/src/GUI/elevationgraph.cpp
+++ b/src/GUI/elevationgraph.cpp
@@ -55,8 +55,12 @@ void ElevationGraph::setInfo()
 		QLocale l(QLocale::system());
 
 #ifdef Q_OS_ANDROID
+		/*: Use an Unicode arrow (U+2B08) when there is no abbreviation or
+			extremly short term for "Up" in your language */
 		GraphView::addInfo(tr("Up"), l.toString(ascent() * yScale(), 'f', 0)
 		  + UNIT_SPACE + yUnits());
+		/*: Use an Unicode arrow (U+2B0A) when there is no abbreviation or
+			extremly short term for "Down" in your language */
 		GraphView::addInfo(tr("Down"), l.toString(descent() * yScale(), 'f', 0)
 		  + UNIT_SPACE + yUnits());
 		GraphView::addInfo(tr("Max"), l.toString(max() * yScale(), 'f', 0)