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(Summary of detailed comments sent by Sandy Gao) The model is that particles and attribute uses in the component model act as if they aren't there for path purposes, so whatever arcs there are coming from a particle, its just as if it came from the prior component. This was less than clear in the description, but now that we have explicitly added axes that navigate to those components, it is REALLY unclear. And it leaves the status of canonical paths for annotations on particles and attribute uses really really unclear. Related to parts of #10469
The WG discussed this in the meeting at 20100618 and agreed that this is largely editorial in nature: the intention was that for the most part particle and attribute steps are transparent/skipped except in certain circumstances. The non-editorial aspects are addressed in #10469. The editor to propose text to clarify the matter.
Text integrated into latest draft and approved.