Yes, the "onePAGER" contains the all the major elements produced by PAGER in a Portable Document Format (PDF) file. It is available via link on the PAGER event-specific web pages. 
The current version of PAGER builds on the previously available PAGER system, which has been publically released since 2007.
a. The USGS does *not* provide tsunami warnings. Tsunami warnings are issued by the National Oceanic and Atmospheric Administration (NOAA). 
No. PAGER loss model results are estimated losses and remain independent of the actual reported losses. Later (greater than one year), the reported losses are used to update the loss model for that region or country.
PAGER employs a new Earthquake Impact Scale (EIS) that is based on two complementary criteria. The first criterion is the estimated cost of damage; this is most suitable for domestic events and those in earthquake-resistant communities.
PAGER shaking intensity, population exposure, loss estimates, and supporting products are generated for all earthquakes of magnitude 5.5, or greater, worldwide.