The size of the zoom box (metres) controls how large an areas is to be displayed in the graphic window when you zoom into nodes and pipes.
The sizes of nodes and other items are also set here. If you have problems with snapping to nodes, you can make the setting a little larger (perhaps 2 %).
You can set here when you want nodes to come on. Try out what seems reasonable… 200 or 2000, perhaps.
Autozoom according to the highlight. Select this if you want to zoom directly into a node or pipe as soon as you have highlighted it in the grids. This is an effective tool in combination with an appropriate zoom box size.
Automatic connection to the database on startup. This is what this function does if you check it.
Language. Swedish is the default, but you can switch to English.
An Analyse search path is specified here. The search path under which Analyse is normally installed is preset.