Use Set to change the range by setting start and finish markers to an exact time or sample position. To specify a time, choose the Time based range option and in hours, minutes, seconds, and thousandths of a second. Enter 1:23:45.678, for example. To specify a sample position, choose the Sample based range option and enter the positions. Tip: Right click on one of the up/down controls to change the precision of the controls.

To align the length of the selection to a CD sector or 1 kilobyte, select the appropriate option. The finish marker will be adjusted to align length when OK is pressed.

See for many more ways of setting the selection.