turning faces/edges

been a while since i posted and figured i'd dive back into the modelling scene, i read something somewhere about turning edges/faces to improve the model, how is this gone about ?

i havn't done much low poly work in a while but if you're using 3d studio, you can select your model, use modifier "edit mesh">edge mode> [turn edge button] ( or similar ) this will literally turn the edge around which can make subtle changes, possibly improve the structure of the wireframe. work in faced mode with edge display on...