создавать и администрировать файлы SCCS (РАЗРАБОТКА) (create and administer SCCS files (DEVELOPMENT))
Стандартный ввод (Stdin)
The standard input shall be a text file used only if -i is
specified without an option-argument or if a file or newfile
operand is specified as '-'. If the first character of any
standard input line is <SOH> in the POSIX locale, the results are
unspecified.
