No 3-18 scores. Instead, the PC starts witha base of 0 (the bonus) in each ability. They have 8 advances to distribute among the six Ability Scores; no score higher than 3, no score lower than -1 (for an extra advance).
Rationale: The actual scores are basically useless beyond knowing which score is desired for advancement at 4th/8th/etc. Those advances can be added as a +1 to any ability.
There it is. A cleaner method of designing the character one wants, rather than fiddle about with dice roll after dice roll.
EDIT: To say I stole this from the AGE system