Function calling amongst scripts

["Nick Tourte" <ntourte@...>]

Hey list,
  This seems like a simple thing to do, but I can't seem to get it to work 
or find the answer. You can call dofile in a script to load and execute the 
main body of another script, and you can call loadfile to load the main body 
into a function and run it upon a function call; but I can't seem to find a 
way to call a function that is registered in another such script. I have 
also tried using require, but I don't know enough about lua packages to 
properly set it up and call the function. How do you go about calling a 
function from another script in a running script? Is there a way through Lua 
directly? Routing it thru c++ isn't an option, because it's not always known 
what user types have to be pushed onto the stack (we're using a lot of 
different types).

Thanks
Nick