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When dealing with generic LuaCOM objects, the binding adopts a
different policy: all Lua parameters are converted to COM ones
as ``in-out'' parameters. LuaCOM assumes that these methods always
return a value; if the called method does not return anything,
LuaCOM pushes a nil value3.2. As all parameters are
set as ``in-out'', all of them will be returned back to Lua, modified
or not by the called method.
Fabio Mascarenhas de Queiroz
2005-06-06