UNIX Tech writing idiocy. RFC 2119. MUST SHALL SHOULD RECOMMENDED MAY
Tech writing. RFC 2119. must shall should recommended may
the most idiotic thing in tech writing history. it was created by the unix idiots.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.