FUNCTION

If you plan to have the entries of your list sorted (either by inserting them sorted or by using the MUIM_List_Sort method) and if the entries of your list are not simple strings, you must supply a compare hook.

This hook will be called with one list element in A1 and another one in A2. You should return

return value statement
-1 e1 < e2
0 e1 == e2
e1 > e2