Found the following hamletworks.org entries referring to line 77

View Commentary Note for 21
21 Mar. And Leedgemen to the Dane,1.1.15

View Commentary Note for 61
61 In which the Maiestie of buried Denmarke1.1.48

View Commentary Note for 75
75 Hora. As thou art to thy selfe.1.1.59

View Commentary Note for 77
77 When {he the ambitious} <th'Ambitious> Norway combated,1.1.61

View Immaterial Textual Note for 77
77 When {he the ambitious} <th'Ambitious> Norway combated,1.1.61

View Material Textual Note for 77
77 When {he the ambitious} <th'Ambitious> Norway combated,1.1.61