The subjectile is seen as a concept, and not necessarily as the actual frame, canvas, or base layer of material used in a given work of art.
The subjectile is a tool that can be employed to analyze art-objects in order to generate hypotheses concerning the relationship between subject and object in art.
[1] The first time Artaud used the word was in a letter to André Rolland de Renéville, ‘Herewith a bad drawing in which what is called the subjectile betrayed me.’[4] In 1946, ‘This drawing is a grave attempt to give life and existence to what until today had never been accepted in art, the botching of the subjectile, the piteous awkwardness of forms crumbling around an idea after having for so many eternities labored to join it.
[8] and further in The Antonin Artaud Critical Reader, which includes texts by Gilles Deleuze, Derrida, and Sontag.
[9] Listen to Antonin Artaud's radio play, To Have Done with the Judgement of God, originally banned from broadcast in 1947.