GPIO pins through sysfs

[Ted87]

I am reading http://linux-sunxi.org/GPIO article and I can't understand what is what:

[gpio_para]
gpio_used= 1
gpio_num=12
gpio_pin_1= port:PE00

My question - which part of "gpio_pin_1=port:PE00" is related to signal name (column 2) or processor pin (column 3) described on 25 and 26 pages of the manual https://www.olimex.com/Products/OLinuXino/A13/A13-OLinuXino-MICRO/resources/A13-OLINUXINO-MICRO.pdf