float getRasmolAngstroms(int i) throws ScriptException {
		Token token = getToken(i);
		switch (token.tok) {
		case Token.integer:
			return token.intValue / 250f;
		case Token.decimal:
			return ((Float) token.value).floatValue();
		default:
			numberExpected();
		}
		return -1; // impossible return
	}