Line 1454 - 1456 states:
"Resource (as defined in EMIX): A Resource is something that can describe its capabilities in a Tender
1455 into a market. How those Capabilities vary over time is defined by application of the Capability
1456 Description to a WS-Calendar Sequence. See [EMIX]."
EMIX has no such definition for 'Resource'. Rather it has many mentions of various characteristics under various circumstances in many different places in the specification, but no definition.
Resource is already defined for Energy Interop. It doesn't make sense to have two definitions in one spec for the same term, one from the spec itself and then another differing one from different spec. Otherwise you'd need to specify each time you used the term which one you were using.