1. A system comprising: a processing unit; and memory accessible to the processing unit, the memory comprising: a spooling module that consumes a data structure that specifies job information from a spool storage, wherein the data structure defines a plurality of nodes organized into a hierarchical arrangement representing different aspects of the job information, the plurality of nodes including at least two nodes that share at least one of a font resource or an image resource; and a plurality of print tickets that are associated with the plurality of nodes of the data structure, the plurality of print tickets defining operations to be performed by filter logic with respect to the plurality of nodes of the data structure, wherein the spooling module merges the plurality of print tickets based on the plurality of nodes.