What does BY BILL, BY BILL WITHOUT WRIT mean?

BY BILL, BY BILL WITHOUT WRIT meaning in Law Dictionary

used. Terms anciently regularly designate actions commenced by original slope, as distinguished from those commenced by initial writ, and used in modern-day training to fits commenced by capias advertising respondendum. 1 Arch. Pr. pp. 2, 337; Harkness v. Harkness, 5 Hill (N. Y.) 213.