Change line feeds

And usage to use

Author: David-Chadwick

index.html

@@ -3909,11 +3909,11 @@ <h3>Reserved Extension Points</h3>
         <p>
 This specification reserves a number of [=properties=] to serve as possible
 extension points. While some implementers signalled interest in these properties,
-their inclusion in this specification was considered to be premature. Some of these
-extension points were originally defined in previous versions of this
-specification, whilst others were not. It is important to note that none of these properties
-are defined by this specification. Consequently, implementers are cautioned that usage of these 
-properties is considered experimental.
+their inclusion in this specification was considered to be premature. Some of 
+these extension points were originally defined in previous versions of this
+specification, whilst others were not. It is important to note that none of these
+properties are defined by this specification. Consequently, implementers are 
+cautioned that use of these properties is considered experimental.
         </p>
         <p>
 Implementers MAY use these properties, but SHOULD expect them and/or