Why the stickers of course!
It was kind of a sportier kid package IIRC. Kinda like the old STX's were.
I found it on the web. Basically the Honeycomb grill and bedrails are what makes it an "edge" for the 4x4 models.
Ford’s freshening of the 2001 Ranger is one of the farthest-ranging exercises of the type. Most notable is the scrapping of the wimpy Splash name and replacing it with Edge. On this model, a pronounced power bulge on the hood — necessary anyway for an optional 4.0-liter SOHC V-6 engine made available for 2001 (last year’s 4.0-liter V-6 used pushrods) — is teamed with a black honeycomb grille and body-color front bumper with incorporated push pads and driving lights.
Edge adds to XL:
3.0-liter V6 engine.
Air conditioning, cloth/vinyl slit bench seat, rear jump seats (SuperCab), AM/FM/CD player.
Color-keyed bumpers, fog lights, wheel lip moldings (Styleside), bed rail covers.
Front tow hooks, Class III Trailer Tow Pkg., raised ride height, 235/75R15 all-terrain white-letter tires, 4WD models add: 4-wheel drive, 2-speed transfer case, sliding rear window.
Edge Plus adds to Edge:
5-speed automatic transmission (SuperCab).
Tilt steering wheel, cruise control, AM/FM w/in-dash 6-disc CD player.
Alloy wheels, 4WD models add: 4-wheel drive, 2-speed transfer case, 5-speed automatic transmission, step bars (Flareside), 245/75R16 all-terrain white-letter tires.
4WD Edge Plus 4.0-liter adds to Edge Plus regular cab/2WD Edge Plus SuperCab:
4.0-liter V6 engine, 5-speed manual transmission, 4-wheel drive, 2-speed transfer case.
Power mirrors, power windows, power door locks, remote keyless entry.
Sliding rear window, step bars.
245/75R16 all-terrain white-letter tires.