Question: To part a straight part in hair
Option 0: take a comb and put the edge where you want to start and pull hair out of head by the roots thru top of head and on thru length of hair separating one side from the other and smooth out.
Option 1: take a comb and put the edge where you want to start and pull edge of comb thru top of head and on thru length of hair separating one side from the other and smooth out.
Answer: 1