hud_target_player
Type: PlayerCommunity reverse-engineering indicates that this value is one of several that can be used with HUD widgets and object waypoints to display different information to each player. When setting a widget or waypoint's text, you would pass this value (or a member variable on it) as a format string parameter. However, while community reverse-engineering indicates that this would refer to a "HUD target player" of some kind, testing has failed to determine any specifics.
This value is read-only.