(Or “live area”) The type area is an advertising industry specification required for magazine advertisements. The type area spec is the largest set of dimensions used for key ad information within the trim area. Since ad space can potentially be cut into during the trimming of the leafs/pages of the periodical, best practices dictate to avoid getting key information or calls to action too close to the trim line. One way this is done is by using margins that ensure a safe spacing exists at the edge of the the ad just inside the type/live area.