added a section for dispatchToParents;
Changed section titles to maintain uniformity (difficult to introduce the plural 'parents' with previous style and maintain uniformity)
Mentioned the optional payload at the beginning instead of the end, so it can be included in the examples that follow.
added a section for dispatchToParents; Changed section titles to maintain uniformity (difficult to introduce the plural 'parents' with previous style and maintain uniformity) Mentioned the optional payload at the beginning instead of the end, so it can be included in the examples that follow.