Section: Annex I (informative): Guidance for contributors to this specification
Content: The following guidance is provided for drafting figures for this specification that contain specific steps which are different in TS 23.402[ Architecture enhancements for non-3GPP accesses ]  [2] due to the PMIP-based S5/S8 interface: - Message flows to this specification will contain the complete procedures applicable for GTP-based S5/S8 only. - In this specification, clause(s) of a message flow that is different for PMIP-based S5/S8 interface are shown surrounded by shaded box indexed by an upper-case letter in ascending order, e.g. "A", "B", "C", etc. For example, at the bottom of the flow, the following text should be included: "NOTE: Procedure steps (A) and (B) for an PMIP-based S5/S8 interface are defined in TS 23.402[ Architecture enhancements for non-3GPP accesses ]  [2]." - Further guidance for drafting procedures for TS 23.402[ Architecture enhancements for non-3GPP accesses ]  [2] can be found in that specification itself.