The action of creating or walking along a footline; marking lines where feet go; the lines or paths created by foot traffic.
From 'footline' (a line marked or worn by feet) plus '-ing' suffix. Footlining describes the process of creating these worn paths through repeated walking.
Footlining is what happens naturally—wear footlining patterns across grass show exactly where people prefer to walk, revealing human decision-making visible from the sky.
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