↑The short data type is assumed to be correct. I have not verified this, but it is a reasonable assumption considering the fact that AvernumScript is a scripting language interpreted through a game written in C or C++.
↑The void data type has been partially verified. Using functions such as void print_num(short num) where short calls a function that also returns void, BoA will display the error message "Empty expression in line %d".
↑The unknown data type is used where I have not been able to determine what data type is returned. Here is a list of functions assumed to return the void data type. See the thread at Spiderweb Software's forums for further details.