or Literature. As a result, this class allows for great specificity in indexing although the schedules themselves occupy very little space in UDC. The subdivisions of e.g. 811 Languages or 821 Literature are derived from common auxiliaries of language =1/=9 (Table 1c) by substituting a point for the equals sign, e.g. 811.111 English language (as a subject of a linguistic study) and 821.111 English literature derives from =111 English language. Common auxiliaries of place and time are also frequently used in this class to express place and time facets of Linguistics or Literature, e.g. 821.111(71)"18" English literature of Canada in 19th century 80 General questions relating to both linguistics and literature. Philology 801 Prosody. Auxiliary sciences and sources of philology 808 Rhetoric. The effective use of language 81 Linguistics and languages 81`1/`4 Special auxiliary subdivision for subject fields and facets of linguistics and languages 81`1 General linguistics 81`2 Theory of signs. Theory of translation. Standardization. Usage. Geographical linguistics 81`3 Mathematical and applied linguistics. Phonetics. Graphemics. Grammar. Semantics. Stylistics 81`4 Text linguistics, Discourse analysis. Typological linguistics 81`42 Text linguistics. Discourse analysis 81`44 Typological linguistics 811 Languages Derived from the common auxiliaries of language =1/=9 (Table 1c) by replacing the equal sign = with prefix 811. e.g. =111 English becomes 811.111 Linguistics of English language 811.1/.9 All languages natural or artificial 811.1/.8 Individual natural languages 811.1/.2 Indo-European languages 811.21/.22 Indo-Iranian languages 811.3 Dead languages of unknown affiliation. Caucasian languages 811.4 Afro-Asiatic, Nilo-Saharan, Congo-Kordofanian, Khoisan languages 811.5 Ural-Altaic, Palaeo-Siberian, Eskimo-Aleut, Dravidian and Sino-Tibetan languages. Japanese. Korean. Ainu 811.6 Austro-Asiatic languages. Austronesian languages 811.7 Indo-Pacific (non-Austronesian) languages. Australian languages 811.8 American indigenous languages 811.9 Artificial languages 82 Literature 82-1/-9 Special auxiliary subdivision for literary forms, genres 82-1 Poetry. Poems. Verse 82-2 Drama. Plays 82-3 Fiction. Prose narrative 82-31 Novels. Full-length stories 82-32 Short stories. Novellas 82-4 Essays 82-5 Oratory. Speeches 82-6 Letters. Art of letter-writing. Correspondence. Genuine letters 82-7 Prose satire. Humour, epigram, parody 82-8 Miscellanea. Polygraphies. Selections 82-9 Various other literary forms 82-92 Periodical literature. Writings in serials, journals, reviews 82-94 History as literary genre. Historical writing. Historiography. Chronicles. Annals. Memoirs 82.02/.09 Special auxiliary subdivision for theory, study and technique of literature 82.02 Literary schools, trends and movements 82.09 Literary criticism. Literary studies 82.091 Comparative literary studies. Comparative literature 821 Literatures of individual languages and language families Derived from the common auxiliaries of language =1/=9 (Table 1c) by replacing the equal sign =