Clean up Accept wording

EIPS/eip-721.md

@@ -99,21 +99,27 @@ interface ERC721 {
     /// @dev This event emits when ownership of any deed changes by any
     ///  mechanism. This event emits when deeds are created (`from` == 0) and
     ///  destroyed (`to` == 0). Exception: during contract creation, any
-    ///  transfers may occur without emitting `Transfer`.
+    ///  transfers may occur without emitting `Transfer`. At the time of any transfer,
+    ///  the "approved taker" is implicitly reset to the zero address.
     event Transfer(address indexed from, address indexed to, uint256 indexed deedId);
 
-    /// @dev This event emits on any successful call to
-    ///  `approve(address _spender, uint256 _deedId)`. Exception: does not emit
-    ///  if an owner revokes approval (`_to` == 0x0) on a deed with no existing
-    ///  approval.
+    /// @dev The Approve event emits to log the "approved taker" for a deed -- whether
+    ///  set for the first time, reaffirmed by setting the same value, or by setting to  
+    ///  to a new value. The "approved taker" is the zero address if nobody can take the
+    ///  deed now or it is an address if that address can call `takeOwnership` to attempt
+    ///  taking the deed. Any change to the "approved taker" for a deed SHALL cause cause
+    ///  Approve to emit. However, an exception, the Approve event will not emit when
+    ///  Transfer emits, this is because Transfer implicitly denotes the "approved taker"
+    ///  is reset to the zero address.
     event Approval(address indexed owner, address indexed approved, uint256 indexed deedId);
 
-    /// @notice Approve a new owner to take your deed, or revoke approval by
+    /// @notice Set the "approved taker" for your deed, or revoke approval by
     ///  setting the zero address. You may `approve` any number of times while
-    ///  the deed is assigned to you, only the most recent approval matters.
+    ///  the deed is assigned to you, only the most recent approval matters. Emits
+    ///  an Approval event.
     /// @dev Throws if `msg.sender` does not own deed `_deedId` or if `_to` ==
     ///  `msg.sender`.
-    /// @param _deedId The deed you are granting ownership of
+    /// @param _deedId The deed for which you are granting approval
     function approve(address _to, uint256 _deedId) external payable;
 
     /// @notice Become owner of a deed for which you are currently approved