[1] Post Office Protocol (RFC 918)

[2] Stack-Operation: Abheben eines Wertes vom Stack

[3] Point Of Presence {Telefonie}

[4] Power On/off Protection (->”IEEE Standard Dictionary”)

[5] Program Operating Plan (->”IEEE Standard Dictionary”)

[6] Proof Of Principle (test) (->”IEEE Standard Dictionary”)

[7] Processor On Plug-in

[8] Puerto Plata, Dominican Republic - internationale Fughafen-Kennung