What does ULP stand for?

What does ULP mean?

ULP	Quilpie, Queensland, Australia Regional » Airport Codes
ULP	Ultra-Low Profile Academic & Science » Electronics
ULP	User Language Programming Computing » General
ULP	Useful Links Page Internet
ULP	Unfair Labor Practices Community » Law
ULP	Unit Of Last Position Academic & Science » Mathematics
ULP	Upper Layer Protocol Governmental » Military
ULP	Unit of Last Place Governmental » Military
ULP	Ultra-short Light Pulse Academic & Science » Physics
ULP	Unfair Labor Practice Governmental » US Government