https://www.write4fun.net/view-entry/209883
Bee, Glee, Plea, Key, Tree, Knee, Scree, She
Contour Lines.
A perceived line that marks the edge of a figure as it curves back into space. Contour lines are created by the edges of things. Contour lines are lines that surround and define the edges of a subject, giving it shape and volume
An audience.
This is a minimalist view, but it works as an audience can be considered to be an essential element of theatre.