The Black Arrow: A Tale of the Two Roses and calling card is a black arrow, cause Dick to suspect that his guardian Sir Daniel Brackley and his retainers are responsible for his father's murder. Dick's suspicions are enough to turn Sir Daniel against him, so he has no recourse but to escape from Sir Daniel and join the outlaws of the Black Arrow against him. This struggle sweeps him up into the greater conflict surrounding them all. The novel is set in the reign of "old King Henry VI" (1422–1461, 1470–1471) and during the Wars of the Roses (1455–1487). The story begins with the Tunstall Moat House alarm
IEEE 1471 IEEE 1471 IEEE 1471 is a superseded IEEE Standard for describing the architecture of a "software-intensive system", also known as software architecture. In 2011 it was superseded by ISO/IEC/IEEE 42010:2011, "Systems and software engineering — Architecture description". IEEE 1471 is the short name for a standard formally known as ANSI/IEEE 1471-2000, "Recommended Practice for Architecture Description of Software-Intensive Systems." Within Institute of Electrical and Electronics Engineers (IEEE) parlance, this is a "recommended practice", the least normative of its standards. In 2007 this standard was adopted by ISO/IEC JTC1/SC7 as , "Systems and Software Engineering -- Recommended practice for architectural description