Edited world can be game-tested at any time using key 'T'. Testing will take place in perspective view with currently active rendering preferences. By default, view configuration no. 6 stores one view with maximum rendering quality which is best for game testing. This view configuration is invoked using key 6 on numeric keyboard. 'Alt+Return' can be used to toggle full screen mode. Player will start from position and orientation determined by player start marker. There can be more that 1 player start markers. You can jump to any marker using console command cht_iGoToMarker=<marker number>.