Text categories the notion of text categories and their classification

Dear Pomona,
Uncle Herry has got a alotment and grow vegetables. He says what makes the mold is worms. You know we pulled all the worms out off our garden and chukked them over Miss Natehbols wall. Well, you better get some more quick a lot ask George to help you and I bring some seeds home when I comes next week by the excursion on Moms birthday.
You sincerely brother John Flynn.
The information structure of this text is built on the correlation of factual and pragmatic information. Factual information tells us about worms’ benefit to soil and the boy’s wish to do gardening at home. More significant here is, however, pragmatic information that implicitly contains knowledge about the addresser. The abundance of grammar mistakes in this letter is indicative of a low educational level and social status of the boy. At the same time this letter characterizes the boy as a loving son striving to help his mother, and as a smart keen-witted boy of a practical turn of mind.
Another type of information correlates text and the functional style it belongs to. As is known, each functional style is characterized by a peculiar set of linguistic means. For example, such features as abundance of terms, logical sequence of sentences, direct referential meanings of the employed vocabulary, the use of sentence patterns of postulatory, argumentative and formulative character are typical of scientific texts. As for fictional texts, they are characterized by imagery, emotiveness and expressiveness created by stylistic devices, by the use of words in contextual meaning, a peculiar selection of vocabulary and syntax reflecting the author’s evaluation. The genre differentiation is also relevant to the information embodied in the text. Besides, text contains information about the peculiarities of an individual style. For this very reason texts by famous authors are recognizable. The following diagram demonstrates the category of informativity and its types:

Diagram 6.
So, the category of informativity is one of the basic and compulsory text categories. However, different types of information are differently located in different texts, and can be expressed either explicitly or implicitly. In other words, the character of information depends on a text type. For instance, factual information is observed in all text types, whereas conceptual and subtextual types of information are peculiar mainly to fictional texts.