What is the meaning of PEG in BIOS/UEFI?

Intel® HD Graphics 5300 Intel® Arc™ A370M Graphics Intel® Arc™ B-Series Graphics Intel® HD Graphics 5500 Intel® UHD Graphics Family Intel® UHD Graphics for 11th Gen Intel® Processors Intel® UHD Graphics 770 Intel® UHD Graphics 610 Intel® HD Graphics 6000 Intel® Graphics for Intel® Core™ Ultra processors (Series 2) Intel® UHD Graphics 630 Intel® UHD Graphics 710 Intel® Iris® Graphics 6100 Intel® Arc™ A770 Graphics (16GB) Intel® UHD Graphics P750 Intel® Iris® Pro Graphics Family Intel® Arc™ A350M Graphics Intel® Arc™ A-Series Graphics Intel® HD Graphics 505 Intel® Arc™ A570M Graphics Intel® Iris® Xe MAX Dedicated Graphics Family Intel® Iris® Pro Graphics 6200 Intel® Arc™ Graphics Intel® Arc™ 140V GPU Intel® UHD Graphics 605 Intel® Iris® Plus Graphics 645 Intel® UHD Graphics for 10th Gen Intel® Processors Intel® Iris® Xe Dedicated Graphics Family Intel® Arc™ graphics for Intel® Core™ Ultra processors (Series 1) Intel® Arc™ 130V GPU Intel® Iris® Plus Graphics Family Intel® Arc™ A530M Graphics Intel® Iris® Xe Graphics eligible Intel® UHD Graphics 615 Intel® UHD Graphics 750 Intel® Arc™ A380 Graphics Intel® Graphics Intel® Iris® Graphics Family Intel® Iris® Plus Graphics 655 Intel® UHD Graphics for 12th Gen Intel® Processors Intel® Iris® Xe Graphics Intel® HD Graphics Family Intel® UHD Graphics 620 Intel® Iris® Xe Graphics Family Intel® UHD Graphics 617 Intel® HD Graphics 510 Intel® Arc™ B570 Graphics Intel® Arc™ A750 Graphics Intel® Arc™ Dedicated Graphics Family Processor Graphics Intel® Iris® Xe MAX Graphics Intel® UHD Graphics 730 Intel® Arc™ B580 Graphics Intel® Arc™ A580 Graphics Intel® Arc™ A770 Graphics (8GB) Intel® HD Graphics for Previous Generation Intel® Processors Intel® HD Graphics 500 Intel® Graphics for Intel® Core™ Ultra processors (Series 1)