What are Vertical Lines?

The term vertical line can mean different things. In geometry, a vertical line is one that goes up and down in contrast to from side to side. In Multi Level Marketing, a vertical line would be the level of the participants in which some would be above and some would be below you. Above you would by your recruiter and all who are above that person, below you would be the people you have recruited, as well as those that they in turn recruit.