Orthography. Most texts are presented in Church Slavonic script with a relatively complex orthography, closely aligned with that used in printed Church Slavonic books. This orthography includes a large number of homophonic letters. Superscript letters are placed inline. For user convenience, searches can be performed using simplified orthography, which employs only modern Russian Cyrillic plus the letter ѣ, without diacritics. Additionally, modernized orthography, which excludes ѣ and the final ъ as well, is also available. Simplified orthography is the default for searches.

Some texts, specifically the so-called Green Menaia published in the 2000s, are presented in the so-called civil script (secular Cyrillic) and modernized orthography, reflecting modern Russian conventions (expanded abbreviations, capital letters in proper nouns, contemporary punctuation, stress marks only on "difficult" words, and no further diacritics). Users can select subsets of texts based on traditional Church Slavonic letterforms or civil script.

Morphological annotation. The search functionality is organized similarly to the main corpus of the Russian National Corpus (RNC): by dictionary form (lemma) and grammatical characteristics. Throughout the corpus, lemmas follow traditional Church Slavonic orthographic conventions, but abbreviations are expanded, stress is marked with a unified acute accent, and aspiration marks are excluded. For user convenience, searches can also be conducted using simplified orthography (used in the drop-down lemma dictionary and as the default search format) or modernized spelling.

Some grammatical annotations were created using automated methods. Grammatical homonymy has not been resolved in the Church Slavonic corpus; however, traditional Church Slavonic orthography often distinguishes homonyms in writing (e.g., singular and plural word forms), and this information was utilized during automatic annotation.

Additional tools. The Church Slavonic corpus, which is extensive and lexically rich, features the "Similar Words" tool, offering a clear representation of the semantic fields of Slavic vocabulary.

The corpus also includes a "Frequency" mode for analyzing collocations of lexemes and grammatical markers, as well as other tools commonly found in large corpora, such as "Word at a glance", "Statistics," n-grams, frequency dictionaries, and comparison between the whole corpus and subcorpora. Note again that grammatical homonymy has been resolved only to a limited extent.

Text metadata. The metadata in the corpus is organized by genre on one hand, and by linguistic norm type according to the time period on the other.

The specific nature of the Church Slavonic corpus's metadata is defined by the layered character of the texts included in liturgical books. For most of these texts, it is impossible to specify the genre, creation date, or translation date. Liturgical sequences often include poetic texts (canons, stichera), instructions for worship leaders, and scriptural readings. Since the metadata describes the liturgical sequence as a whole, rather than each complete fragment, it does not classify texts as prose or poetry.

Instead, broad categories are used to classify text types:

"Scripture" (the Bible, liturgical Gospel, and collections of Old Testament readings in separate rubrics);
"Patristic";
"Service" (all liturgical rites and services, as well as collections of liturgical texts, such as Theotokia, kontakia, etc., in various compilations);
"Typikon";
"Akathist";
"Scientific" (a single text: Ethika Hieropolitika);
"Hagiography";
"Oration" (the last two genres are primarily represented in the Menaion Reader by Dimitri of Rostov).

Texts can also be filtered by linguistic norm type related to their period of creation. The following categories are available:

"Archaic type" (e.g., Philokalia);
"Hybrid type" (e.g., Spiritual Alphabet);
"Standard type" (all core liturgical books except 20th-century texts);
"20th century" (services and akathists composed in the 20th century).

Some texts, mainly later ones, are annotated with authorship and/or date information. For most texts, metadata include the year of publication.

For later services and akathists, a special group of metadata features has been introduced, reflecting the chronology of their inclusion into the circle of liturgical texts and key participants in this process.

Frequency dictionary