$ pgm1 'arguments to' 'pgm1'
this is the main pgm
it was passed 3 arguments:
  Argument 1: "pgm1"
  Argument 2: "arguments to"
  Argument 3: "pgm1"
This is pgm2
Using __argv stem, there are 3 arguments.  They are:
  Argument 1: "pgm1"
  Argument 2: "arguments to"
  Argument 3: "pgm1"
Using arg(), there are 2 arguments:
  Argument 1: "arguments"
  Argument 2: "to pgm2"