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'''Programmer and Operator Productivity Aid''' (POP) is an application package written originally for the [[IBM]] [[System/34]], which became much more popular and functional on the IBM [[System/36]] and universal on the [[Advanced/36]].<ref>[http://bitsavers.trailing-edge.com/pdf/ibm/system36/SC21-9072-0_Programmer_and_Operator_Productivity_Aid_Description_and_Operations_Guide_Jan84.pdf Programmer and Operator Productivity Aid: Description and Operations Guide], [[IBM]], SC21-9027-0, January 1984.</ref><ref>{{cite magazine|title=New Products|work=Computerworld|url=
POP comprises four major tools:
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