I guess the easiest way to get hang of the tool is with some “practical” examples as done with the attribute emitters. I’m going jump right into the deep end and use as many of the features the tool has as possible.

Load some of the vanilla terrains. I’m using Malden on this sample, at pos ASL [7195.34, 8076.05, 210]; so open debug console and exec the following code:

get3DENCamera setPosASL [7195.34, 8076.05, 180];
get3DENCamera setVectorDirandUp [[-0.484988,0.714168,-0.504743], [-0.283566,0.417564,0.863268]]

and you can see the stone building with the broken oven (or whatever it is):

Select the particle editor (ALT + F1), go to the tool Prefs leaf (CTRL + 8) and check the Use default emitter set box. Move to the baking oven, disable Eden Surface Snapping, point the mouse cursor somewhere near the oven and press SHIFT + INSERT. The default emitter set appears, maneuver it into the baking oven using the translation widget and you now have a fire in the oven (images on next page):

Let’s add smoke coming from the chimney.
Move camera outside and position it so that you can see/access the chimney, press INSERT to insert a single emitter and select SmallDestructionSmoke class for it: