Custom world generation/carver

The root tag


 * The type of carver to use, must be one of either,  ,  ,  , or.
 * See below.

Shared by all carver types:
 * Configuration values for the carver.
 * The probability that each chunk attempts to generate this carver, must be between 0 and 1.
 * Height provider. The height at which this carver attempts to generate.
 * Float provider. Vertically scales the carved area.
 * The vertical anchor where lava begins to generate.
 * If true, aquifers will be generated.
 * The vertical anchor where lava begins to generate.
 * If true, aquifers will be generated.
 * If true, aquifers will be generated.

When carver type is , , or  :
 * Configuration values for the carver

When carver type is  or  '':
 * Configuration values for the carver.
 * Creates the curves in the canyon as it continues.
 * The shape to use for the ravine.
 * The width of the canyon.
 * Cannot be negative.
 * Cannot be negative.
 * Cannot be negative.