Нажимая кнопку, я принимаю условия Пользовательского соглашения и даю своё согласие на обработку моих персональных данных
The terms originate from Latin and describe the two sides of a single leaf of paper:
In the world of PDF documents and publishing, "recto-verso" is a standard term for formatting.
The term "Recto-Verso" also appears in creative and academic fields: