How to add fog or haze

Fog can be easily selected for each sector if world base entity that contains that sector has fog pointer set. To set this pointer, you have to drop fog marker entity. This entity will be used later to change parameters of fog (like density, color, height, ...). Now we have to setup world base fog pointer. Select world base entity that contains sectors with fog. Select fog pointer property. In target combo box select dropped fog marker or Ctrl+Alt+click it from world. Now select sectors that will have fog and set new fog type on sector page of info window. Same works for haze.