Each time you click or drag an object which is fixed in place, the fix value for for that object will reduce by one unless the fix value is equal to or higher than the Strong Fix value. An object with a Strong Fix value is permanently fixed in place. This is also known as the MFO ("maximal fix object") value. This value must be at least 2.

A KiSS artform may specify the Strong Fix it requires by using a HINT.