Vexillography is allied with vexillology, the scholarly study of flags, but is not synonymous with that discipline.
Vexillographers face the necessity for the design to be manufactured (and often mass-produced) into or onto a piece of cloth, which will subsequently be hoisted aloft in the outdoors to represent an organization, individual, idea, or group.
In this respect, flag design departs considerably from logo design: logos are predominantly still images suitable for reading off a page, screen, or billboard; while flags are alternately draped and fluttering images - visible from a variety of distances and angles (including the reverse).
The prevalence of simple bold colors and shapes in flag design attests to these practical issues.
Taking a minimalist approach, the booklet lists five basic flag design principles which have become a standard reference in the vexillographer community.