Gen-ART 64

From: Mary Barnes

Description: Section 5.5 [6.5]: It would be helpful to highlight that foundation, priority and type are based on ICE, in particular since ICE is not discussed until the subsequent section - e.g., "the foundation production" -> "the ICE foundation production". 

Notes: Will modifies the foundation, priority, type, rel_addr_port and extensions definitions in 6.5.1.1 as suggested