[Brian]

Welcome to the forums, David! Sorry for the confusion - it's pretty much as Marissa describes in post number 2. There are two similar views that show flagged items. The one that appears in the top level sidebar only shows items that are Flagged and Available (have no start date or one in the past, are assigned to project that's active and to a context that not in the "On Hold" state.)

The second "Flagged" view, under the "Perspectives" sidebar item, is the one that comes over when you sync OmniFocus with a Mac. That one shows you all the ones in the view I mentioned above, plus the actions that fall into those additional categories.

Same flag in both places, just different settings with regards to whether it includes unavailable actions.