I want to have the Pool of Tears act as a fresh water source for adjacent tiles, and someone suggested that I use python to give the Pool of Tears the effects of an oasis. But after looking at the issue a little bit, my inference is that unless there is an appropriate function for the Pool of Tears in the API, there is no way to do this without recompiling the game. There isn't any such function being used in the game, and I really doubt a function would be in the API unless it were going to be used. But I wanted to come here and verify my tentative conclusion.