From 3680cd5926c1185b2338648bad29fae15e5f34b8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Tue, 10 Oct 2017 11:56:33 +0300
Subject: [PATCH] params: explain EIP150Hash (#15237)

---
 params/config.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/params/config.go b/params/config.go
index bff701f09..18579666b 100644
--- a/params/config.go
+++ b/params/config.go
@@ -99,17 +99,18 @@ type ChainConfig struct {
 	ChainId *big.Int `json:"chainId"` // Chain id identifies the current chain and is used for replay protection
 
 	HomesteadBlock *big.Int `json:"homesteadBlock,omitempty"` // Homestead switch block (nil = no fork, 0 = already homestead)
+
 	DAOForkBlock   *big.Int `json:"daoForkBlock,omitempty"`   // TheDAO hard-fork switch block (nil = no fork)
 	DAOForkSupport bool     `json:"daoForkSupport,omitempty"` // Whether the nodes supports or opposes the DAO hard-fork
 
 	// EIP150 implements the Gas price changes (https://github.com/ethereum/EIPs/issues/150)
 	EIP150Block *big.Int    `json:"eip150Block,omitempty"` // EIP150 HF block (nil = no fork)
-	EIP150Hash  common.Hash `json:"eip150Hash,omitempty"`  // EIP150 HF hash (fast sync aid)
+	EIP150Hash  common.Hash `json:"eip150Hash,omitempty"`  // EIP150 HF hash (needed for header only clients as only gas pricing changed)
 
 	EIP155Block *big.Int `json:"eip155Block,omitempty"` // EIP155 HF block
 	EIP158Block *big.Int `json:"eip158Block,omitempty"` // EIP158 HF block
 
-	ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = alraedy on homestead)
+	ByzantiumBlock *big.Int `json:"byzantiumBlock,omitempty"` // Byzantium switch block (nil = no fork, 0 = already on byzantium)
 
 	// Various consensus engines
 	Ethash *EthashConfig `json:"ethash,omitempty"`
-- 
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