Doering began exploring concepts related to "core language of form" and "core forms" (now Coreforms) after receiving her MFA from the School of the Art Institute of Chicago. Doering's concept of Coreforms includes the zero (circle) seen as a one (vertical line) or a hyphen (horizontal line). The tilde (swash) represents a movement through space from one position to another.
On May 31, 2013, D.A. Doering, Denise Laurin-Donatelle, and others, used Keyword "Nature" as a point of departure for a Coreform near the Washington Bridge in Washington Heights, New York City.