crlf        =  %d13.10

command     =  "command string"

char-line = %x0D.0A *(%x20-7E) %x0D.0A

without-ws-and-ctl = %d1-8 / %d11 / %d12 / %d14-31 / %d127

three-blank-lines = %x0D.0A.0D.0A.0D.0A