It consists of an increasing linear relief starting from a certain point until the end of the flank line. The relief amount and length, which are measured from both ends of the tooth, must be specified.
All in all, the user can make use of the line load and gap width graphics as guidance to stablish a flank correction proposal. If, for instance we start from a gear tooth mesh condition like this:
And we apply a combination of Flank line crowning and Flank line slope modification, it significantly helps to have an homegenous Line load as shown in the following pictures: