* 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:
Collects Uncanny X-Men #304-305, 315, X-Factor (1986) #92; X-Men Unlimited (1993) #2; X-Force (1991) #25; X-Men (1991) #25; Wolverine (1988) #75; Excalibur #71. Matters come to a head in the most shocking way possible as Magneto makes his biggest move yet, culminating in a shocking attack on Wolverine - and a showdown between Professor X and Magneto that must be seen to be believed!