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-rw-r--r--docs/miscellaneous.rst11
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@@ -74,6 +74,17 @@ Solidity always places new objects at the free memory pointer and memory is neve
.. index: memory layout
+*******************
+Layout of Call Data
+*******************
+
+When a Solidity contract is deployed and when it is called from an
+account, the input data is assumed to be in the format in `the ABI
+specification
+<https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI>`_. The
+ABI specification requires arguments to be padded to multiples of 32
+bytes. The internal function calls use a different convention.
+
*****************
Esoteric Features
*****************