Not a trim
Wall (round off corners)
South edge trim
Southeast outer corner trim
East edge trim
Northeast outer corner trim
North edge trim
Northwest outer corner trim
West edge trim
Southwest outer corner trim
Northeast inner corner trim
Southeast inner corner trim
Southwest inner corner trim
Northwest inner corner trim
Frills (draw edge frills)
Road (connect with roads)
Walkway (round off corners)
Waterfall (both wall and water)
City trim (connect to roads)