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Update OEP-4.mediawiki #63

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Update OEP-4.mediawiki #63

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1 change: 1 addition & 0 deletions OEPS/OEP-4.mediawiki
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Expand Up @@ -97,6 +97,7 @@ def approve(owner, spender, amount)
</pre>

The approve function allows the <code>spender</code> address to withdraw tokens from the <code>owner</code> address, of up to <code>amount</code> tokens.
The <code>amount</code> should be no less than <code>0</code> and no more than the token balance of the <code>owner</code>.
If this function is called again it overwrites the current allowance with the new value.
The parameters <code>owner</code> and <code>spender</code> must be 20-byte addresses.
If not, this method must <code>throw</code> an exception.
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