The objective of textology (text linguistics) is to analyse and describe interpersonal communication in all its aspects, as it happens now and did in the past, in various discourse communities. The basic categories of so defined textology are: text, utterance and discourse, regarded as different perspectives on the phenomenon of interpersonal communication. This phenomenon manifests itself in established works, with their specific semantic and syntactic structure, but also in genre affinity, in interactive events fixed in a widely understood situational context, and in social, cultural and linguistic norms which regulate communication activities in individual human communities and make interpersonal communication possible. These three categories can be said to reify in definite communication phenomena: in written and recorded text, and in spoken utterances, i.e. in actualized discourses.