In Audacity 2.1.3 there's an additional way of selecting a time range. You
can store the cursor position, move the cursor, and then select a time
range from the current cursor position to the stored cursor position.
For details, see either the following section of the Jaws guide:
http://vip.chowo.co.uk/wp-content/uploads/jaws/Audacity-2.1.3-Guide.html#selecting-a-time-range-using
or the following section of the Edit menu page of the manual:
http://manual.audacityteam.org/man/edit_menu.html#Store_Cursor_Position
David.