L step or bucket step

Coach the L-step is used with the inside zone blocking schemes and the bucket step is used with the stretch play. The L-step puts an offensive helmet to the near ear of the down defender, with the bucket step the landmark for the offensive line is to rip the backside arm through the playside number. Coach CAmpbell

Which direction are the toes pointed in these two steps?

Coach Campbell,

Why does the angle of the feet and push differ with a 7 man front than for a 6 man front when pushing the inside zone? How does the o-line know if they are to push vertically or at an angle?