The value of argv[0] is a pointer to a null byte when the program is   run on DOS versions prior 

to version 3.0. For DOS version 3.0 or   later, argv[0] points to the program name.

 The remaining argv strings point to each component of the DOS   command-line arguments. 

Whitespace separating arguments is removed,   and each sequence of contiguous non white 

space characters is treated   as a single argument. Quoted strings are handled correctly (that 

is,   as one string containing spaces)
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