Players
Use the p: parameter to list one or more players.
p:[playername]
Supports multiple (comma seperated)!
Searches for activities caused by a player.
p:viveleroi will query activities in which viveleroi was the cause of the action.
Prior to Prism 4.3 this parameter also included a search for players affected by an action (player-death). To find that data now, use
pa:<player>