A flag's layout can inform a story; let's say

https://charliexfwu868.terracolumn.com/posts/who-decides-which-flags-are-acceptable-a-look-at-school-policies-2

A flag's design can inform a story; for instance, stars may also represent states or areas inside a country while stripes can symbolize old narratives or struggles for independence by means of flying colours that resonate with citizens.