[continentalness, height] points (continentalness in −1…1, height in metres).
Shifts land vs ocean: positive = more land. Roughly −0.5 … 0.5.
Octaves of the continent noise.
Typical continent size, metres.
Domain-warp strength as a fraction of scale (coastline wiggle).
Continents: where land and ocean are, and the base height of each.