интерфейс для системы форматирования документов GNU roff (front end to the GNU roff document formatting system)
Примечание (Note)
When paging output for the 'ascii', 'cp1047', 'latin1', and
'utf8' devices, programs like more(1) and less(1) may require
command-line options to correctly handle some output sequences;
see grotty(1).
