The article is devoted to the problem of the variability of the speech genre within one discourse. The purpose is to determine the parameters of the variability of the compositional structure of the annotation speech genre functioning in the publishing discourse. The article is based on the analysis of 250 abstracts published in literary, artistic, scientific and educational publications published in 2018-2023 by leading Russian publishers. The study revealed that the invariant structure of the annotation genre in the publishing discourse is created by combining in various combinations the compositional and content blocks «author», «text», «reader», «publication». However, none of the selected components is mandatory, so the compiler of the annotation, depending on the communicative purpose, the specifics of the content of the original source, its reader's address, can build a publishing annotation in such a way as to focus on the significant and attractive elements of the book. As a result, the variability of the compositional and structural construction of the annotation leads to a blurring of its genre form.
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