Having a well trimmed edge around your lawn or flowerbed will make it look well cared for and can prevent unruly weeds from invading your lawn.
A lawn edger.
Lawn edgers are available in pole gas pole electric electric push wheel models and gas powered push wheel models.
Gas edgers often have an electronic start whereas electric edgers have an on and off switch.
The edging mode on the black decker is a patented edge guide for straight edging along hard surfaces while the trenching mode makes it easier to cut through.
Both push wheel and pole gas powered lawn edgers have a pull cord and you should see easy start on the package.
This in addition to the in built cord retention will ensure that the extension cord is kept secure.
An edge trimmer or lawn edger is a garden tool either manual or motorised to form distinct boundaries between a lawn typically consisting of a grass or other soft botanical ground cover and another ground surface feature such as a paved concreted or asphalted area or a granular material such as sand or gravel or simply uncovered soil for example an unbounded garden.