+.B "Left/right arrow keys"
+Scroll left/right.
+.TP
+.B "+/-"
+Zoom in/out.
+.TP
+.B "Up/down arrow keys"
+Zoom in/out.
+.TP
+.B "Home/End"
+Jump to the start/end of the sample data.
+.TP
+.B "1/2"
+Attach left/right side of the cursors to the mouse.