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The following program will not compile.  I can not figure this out.  The
last ("IF") statement is where the problem lies. The compile error
essentially says "expecting '=' near 'arg[1]'".

Any ideas?

--  dummy 3
--          receive parms, print them
--   Invoke program :  lua dummy3 parm1 parm2
    print("Hello, world!    dummy3")
    print("Arg1 is ==> ", arg[1])
    print("Arg2 is ==> ", arg[2])
    local a = arg[1]
    local b = arg[2]
    print("Arg1 is ", a)
    print("Arg2 is ", b)
    If arg[1] == nil then print("Arg1 is nil") end

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