diff --git a/rtdata/languages/default b/rtdata/languages/default
index 1be0fc94d..48cbefef5 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -467,7 +467,7 @@ MAIN_TOOLTIP_SAVE;Save image to the default folder
 MAIN_TOOLTIP_SHOWHIDELP1;Show/hide the left panel <b>l</b>
 MAIN_TOOLTIP_SHOWHIDERP1;Show/hide the right panel <b>Alt-l</b>
 MAIN_TOOLTIP_SHOWHIDETP1;Show/hide the top panel <b>Shift-l</b>
-MAIN_TOOLTIP_TOGGLE;Toggle before/after view <b>B</b>
+MAIN_TOOLTIP_TOGGLE;Toggle <b>before</b>/<b>after</b> view <b>B</b>
 NAVIGATOR_B_NA;B = n/a
 NAVIGATOR_B_VALUE;B = %1
 NAVIGATOR_G_NA;G = n/a
@@ -732,9 +732,9 @@ SAVEDLG_SAVEIMMEDIATELY;Save immediately
 SAVEDLG_SAVESPP;Save processing parameters with image
 SAVEDLG_TIFFFILTER;TIFF files
 SAVEDLG_TIFFUNCOMPRESSED;Uncompressed TIFF
-TOOLBAR_TOOLTIP_CROP;Crop selection <b>C</b>
+TOOLBAR_TOOLTIP_CROP;<b>Crop</b> selection <b>C</b>
 TOOLBAR_TOOLTIP_HAND;Hand tool <b>H</b>
-TOOLBAR_TOOLTIP_STRAIGHTEN;Straight line selection <b>S</b>
+TOOLBAR_TOOLTIP_STRAIGHTEN;<b>Straighten</b> / <b>fine rotation</b>  <b>S</b> \n\nIndicate the vertical or horizontal by drawing a guide line over the image preview. Angle of rotation will be shown next to the guide line. Center of rotation is the geometrical center of the image.
 TOOLBAR_TOOLTIP_WB;Spot white balance <b>W</b>
 TP_CACORRECTION_BLUE;Blue
 TP_CACORRECTION_LABEL;C/A Correction