Note: The main 3d level editor needs to be opened for some reason to see the palettes of creatures, placeables and the like on the right hand side of the editor.
To open the area editor, simply double click on an area in the left hand list, or Right Click → View Area on it. You can in NWN:EE open more than one area if you enable it in the options (and can then copy things between them even) but this does tend to cause more crashes so be careful. However it is very useful.
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