Major 3.1 Time Intervals and Collections of Time-Related Intervals reads in part: ***** Certain terms appear throughout this document and are defined in Table 3‑1. Some terms are discussed in greater depth in later sections. In all cases, the normative definition is in this section. WS-Calendar terminology begins with a specialized terminology for the segments of time, and for groups of related segments of time. These terms are defined in Table 3‑1 through Table 3‑4 below, and are quoted from [WS-Calendar]. The definitions are normative because this is a standalone specification. ***** The "The definitions are normative because this is a standalone specification." was the first thing that caught my eye. Really? Standalone or not that sentence makes no sense. But then noticing, "certain terms," "some terms," etc. Rather than copying from WS-Calendar, why not make a profile of WS-Calendar that has the six (6) changes listed in Appendix D and then require conformance to WS-Calendar and then this as a profile? A lot less writing and unnecessary UML diagrams.