The term denotes a portable document format file containing information regarding various arrangements of offensive players in American football. These documents typically offer diagrams, descriptions, and strategic considerations related to different player alignments and their intended purposes on the field. For instance, a resource of this type may illustrate the positioning of linemen, running backs, quarterbacks, and wide receivers in formations like the I-formation, shotgun, or pistol, accompanied by explanations of their strengths and weaknesses against particular defensive schemes.
Access to this type of readily available information benefits coaches at all levels, from youth leagues to professional teams, by providing a standardized and easily shared format for studying and disseminating tactical approaches. Historically, such data was compiled and distributed in printed manuals or shared through personal networks. The advent of digital documents and their subsequent sharing capabilities has democratized access to a wider range of strategies and analytical insights, fostering greater innovation and competition within the sport.