This SPACING parameter will determine the space between lines. Like the rest of the values it must be expressed in twips.
The default value for SPACING is 200.
If you are going to work with big sizes of fonts it will be necessary to change it. A greater value will be required in that case.
Try changing this value and reload the report to see the effects.
Example:
SPACING=250
It is remmarkable that the Spacing setting will affect all the report. Read Spacing command to know what to do
if you need more "spacing"