Automatically merged updates to draft EIP(s) 2535 (ethereum#2974)

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EIPS/eip-2535.md

@@ -376,7 +376,7 @@ A diamond implements the following implementation points:
 
 1. A diamond contains a fallback function and zero or more immutable functions that are defined directly within it.
 1. A diamond associates function selectors with facets.
-1. When a function is called on a diamond it executes immediately if it is an "immutable function" defined directly in the diamond. Otherwise the diamond's fallback function is executed. The fallback function finds the facet associated with the function and executes the function using `delegatecall`. If there is no facet for the function then execution reverts.
+1. When a function is called on a diamond it executes immediately if it is an "immutable function" defined directly in the diamond. Otherwise the diamond's fallback function is executed. The fallback function finds the facet associated with the function and executes the function using `delegatecall`. If there is no facet for the function and no other mechanism to handle it then execution reverts.
 1. Each time functions are added, replaced or removed a `DiamondCut` event is emitted to record it.
 1. A diamond implements the DiamondLoupe interface.
 1. A diamond implements ERC165. If a diamond has the `diamondCut` function then the interface ID used for it is `IDiamondCut.diamondCut.selector`. The interface ID used for the diamond loupe interface is `IDiamondLoupe.facets.selector ^ IDiamondLoupe.facetFunctionSelectors.selector ^ IDiamondLoupe.facetAddresses.selector ^ IDiamondLoupe.facetAddress.selector`.