* Client-Side Metrics Include
* Wiki: https://tiny.amazon.com/cpso0wg6
* Needs to be included at the top of pages because it tracks latency--
* ue_t0 needs to be as close to body load as possible.
* - ue.tag maps to URLType dimension of OnlineQueryLog in PMET. Because we cannot add
* custome data to other dimensions in PMET through CSM, we are replicating it thrice to
* cover each store, page type, and the intersections of the two.
* - Whitelists are listed in the usage guide:
"Superman in Exile" part 5, continued from ADVENTURES OF SUPERMAN #452. One step closer to finding redemption, Superman continues his self-imposed exile in deep space. Plus, in the Man of Steel's absence, Lex Luthor plans his biggest coup yet. Continued in ADVENTURES OF SUPERMAN #453.