The height and spread of a specimen is displayed using an intuitive control that can be used to indicate both single values and value ranges.

To indicate single values for height or spread, simply click on the rule at the appropriate place.

To indicate a range of values use the �mouse-drag� operation like this: position the mouse over the lower value and press down on the mouse button, then drag the mouse to the right until the ending value of the range is reached, then release the mouse button. ................................