Abstract: In this article, the subject of research is a system of integrated texts (supertext) as textual unity. The purpose of the study is to specify the terminology and clarify the features of some aspects of textual unity, in particular, to clarify the concepts of the core and its structural components, as well as to solve some other theoretical questions, the answers to which today determine clarity in the identification, classification and interpretation of supertexts. In questions of the theory of supertext, the methodological basis of the study was the work of V. N. Toporov, N. A. Kupina and G. V. Bitenskaya, N. E. Mednis, A. G. Loshakov, in questions of the theory of the literary cycle — the work of M. M. Girshman, I. V. Fomenko, V. V. Vinogradov, A. A. Slyusar, Yu. V. Lebedev, V. G. Odinokov, A. S. Yanushkevich, M. N. Darwin, V. I. Tyupa, L. E. Lyapina, E. Yu. Afonina, O. G. Egorova, and others, in questions of the theory of collective-author text unity — the work of Yu. M. Lotman. The study clarifies the concept of the core of text unity, describes the components of different forms of text unity, based on their classification proposed by A. G. Loshakov, and refined by this scientific work. All this speaks of the novelty of the study, which continues the general theory of supertext. The development of the theory of such a variety of supertext as text unity not only contributes to the further study of its various aspects, clarification of their functions, but also indicates new approaches to large text formations, since, generated by creative writers, they not only recreate the world, but also form a picture world assimilated by the perceiving consciousness.