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-rw-r--r--docs/miscellaneous.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst
index c5178b51..8270727f 100644
--- a/docs/miscellaneous.rst
+++ b/docs/miscellaneous.rst
@@ -333,8 +333,9 @@ Global Variables
- ``tx.origin`` (``address``): sender of the transaction (full call chain)
- ``assert(bool condition)``: abort execution and revert state changes if condition is ``false`` (use for internal error)
- ``require(bool condition)``: abort execution and revert state changes if condition is ``false`` (use for malformed input or error in external component)
+- ``require(bool condition, string message)``: abort execution and revert state changes if condition is ``false`` (use for malformed input or error in external component). Also provide error message.
- ``revert()``: abort execution and revert state changes
-- ``revert(string)``: abort execution and revert state changes providing an explanatory string
+- ``revert(string message)``: abort execution and revert state changes providing an explanatory string
- ``blockhash(uint blockNumber) returns (bytes32)``: hash of the given block - only works for 256 most recent blocks
- ``keccak256(...) returns (bytes32)``: compute the Ethereum-SHA-3 (Keccak-256) hash of the :ref:`(tightly packed) arguments <abi_packed_mode>`
- ``sha3(...) returns (bytes32)``: an alias to ``keccak256``