{
	"genesisGasLimit": { "v": 1000000, "d": "Gas limit of the Genesis block." },
	"minGasLimit": { "v": 125000, "d": "Minimum the gas limit may ever be." },
	"gasLimitBoundDivisor": { "v": 1024, "d": "The bound divisor of the gas limit, used in update calculations." },
	"genesisDifficulty": { "v": 131072, "d": "Difficulty of the Genesis block." },
	"minimumDifficulty": { "v": 131072, "d": "The minimum that the difficulty may ever be." },
	"difficultyBoundDivisor": { "v": 2048, "d": "The bound divisor of the difficulty, used in the update calculations." },
	"durationLimit": { "v": 8, "d": "The decision boundary on the blocktime duration used to determine whether difficulty should go up or not." },
	"maximumExtraDataSize": { "v": 1024, "d": "Maximum size extra data may be after Genesis." },
	"epochDuration": { "v": 30000, "d": "Duration between proof-of-work epochs." },
	"stackLimit": { "v": 1024, "d": "Maximum size of VM stack allowed." },

	"tierStepGas": { "v": [ 0, 2, 3, 5, 8, 10, 20 ], "d": "Once per operation, for a selection of them." },
	"expGas": { "v": 10, "d": "Once per EXP instuction." },
	"expByteGas": { "v": 10, "d": "Times ceil(log256(exponent)) for the EXP instruction." },

	"sha3Gas": { "v": 30, "d": "Once per SHA3 operation." },
	"sha3WordGas": { "v": 6, "d": "Once per word of the SHA3 operation's data." },

	"sloadGas": { "v": 50, "d": "Multiplied by the number of 32-byte words that are copied (round up) for any *COPY operation and added." },
	"sstoreSetGas": { "v": 20000, "d": "Once per SLOAD operation." },
	"sstoreResetGas": { "v": 5000, "d": "Once per SSTORE operation if the zeroness changes from zero." },
	"sstoreClearGas": { "v": 5000, "d": "Once per SSTORE operation if the zeroness doesn't change." },
	"sstoreRefundGas": { "v": 15000, "d": "Once per SSTORE operation if the zeroness changes to zero." },
	"jumpdestGas": { "v": 1, "d": "Refunded gas, once per SSTORE operation if the zeroness changes to zero." },

	"logGas": { "v": 375, "d": "Per LOG* operation." },
	"logDataGas": { "v": 8, "d": "Per byte in a LOG* operation's data." },
	"logTopicGas": { "v": 375, "d": "Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas." },

	"createGas": { "v": 32000, "d": "Once per CREATE operation & contract-creation transaction." },

	"callGas": { "v": 40, "d": "Once per CALL operation & message call transaction." },
	"callStipend": { "v": 2300, "d": "Free gas given at beginning of call." },
	"callValueTransferGas": { "v": 9000, "d": "Paid for CALL when the value transfor is non-zero." },
	"callNewAccountGas": { "v": 25000, "d": "Paid for CALL when the destination address didn't exist prior." },

	"suicideRefundGas": { "v": 24000, "d": "Refunded following a suicide operation." },
	"memoryGas": { "v": 3, "d": "Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL." },
	"quadCoeffDiv": { "v": 512, "d": "Divisor for the quadratic particle of the memory cost equation." },

	"createDataGas": { "v": 200, "d": "" },
	"txGas": { "v": 21000, "d": "Per transaction. NOTE: Not payable on data of calls between transactions." },
	"txDataZeroGas": { "v": 4, "d": "Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions." },
	"txDataNonZeroGas": { "v": 68, "d": "Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions." },

	"copyGas": { "v": 3, "d": "" },
	
	"ecrecoverGas": { "v": 3000, "d": "" },
	"sha256Gas": { "v": 60, "d": "" },
	"sha256WordGas": { "v": 12, "d": "" },
	"ripemd160Gas": { "v": 600, "d": "" },
	"ripemd160WordGas": { "v": 120, "d": "" },
	"identityGas": { "v": 15, "d": "" },
	"identityWordGas": { "v": 3, "d": ""}
}