Correct placement of stress in words (e.g., звони́т , торты́ ) and proper pronunciation of specific sounds.

Applied rules for commas, dashes, and complex spelling cases found in the practice tasks.

Proper word choice, avoiding tautology (pleonasm), and distinguishing between paronyms (words that sound similar but have different meanings).

Rules for sentence construction, including the correct use of participial and adverbial phrases, and agreement between subjects and predicates.

Correct formation of word forms, such as plural nouns ( директора vs. директоры ) or the declension of numerals.

The content is often used by students in specialized secondary education (colleges) and high schools to prepare for language proficiency exams.