[Therion] How to draw water area with an island

Is there a way to draw a large area of water, then draw an exclusion or island in the middle of it? I drew some rocks in the middle of a water area. They partially block the water symbol - but not entirely. I drew a border around the island area. If I use either -outline in or -outline out, then the entire area becomes opaque to everything. It is drawn like it is a column. If I do not use the -outline option, then it has no effect at all. I also tried making the island border part of the water area. No change. One way I can think of to do this is to draw the water as two areas, each of which goes half-way around the island. It would work but seems a bit complicated. Suggestions? -- =============== Bill Gee