Variable, Area of effect

Variable, Area of effect is an enhancement found on page 35 of GURPS Psionic Powers.
Variable is an enhancement which normally is taken for leveled traits to be able to use them at less than their full level of power.
That is not relevant in the case of Flash since it is just ONE level of Affliction.
The relevant fluff in the ability is "you may always choose to scale down your range" and "Bob, with Flash 4 .. tones his power down to a two-yard range"
This is applying the concept of Variable to a leveled enhancement instead of a leveled advantage.
Selectivity can be used to turn enhancements off, but that costs +10% (double the +5% applied here) and it's not clear whether that can do so in degrees, or whether it's an "all or nothing" for leveled enhancements like Area Effect
category:enhancements