Any of a large class of formal and profoundly useless pseudo-languages in which management forces one to design programs. Too often, management expects PDL descriptions to be maintained in parallel with the code, imposing massive overhead of little or no benefit.
See also flow chart.
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Nearby terms: program « Program Composition Notation « program counter « Program Design Language » Program Evaluation and Review Technique » Program Information File » Programmable Airline Reservation System