An example method is provided in accordance with the present disclosure, which may be used for example for aggregating print jobs on a web of print medium for frame by frame printing. The example method comprises imposing several print jobs, each comprising patterns to be printed, on the web of print medium, in at least two parallel lanes in the longitudinal direction of the web of print medium, wherein the patterns imposed in each frame are whole patterns, a starting point for the imposition of patterns in each lane and each frame depends on an end point of the imposed patterns in the same lane in the previous frame, and a frame rewind distance is determined for each frame whereby, when printing on the web of print medium, the starting point of each lane in one frame comes to be adjacent to the end point of the lane in the previous frame.