Found the following hamletworks.org entries referring to line 798

View Material Textual Note for 797
797 {Hora.} <Hor. & Mar. within.> My Lord, my Lord.1.5.113

View Commentary Note for 798
798 Enter Horatio, and Marcellus...

View Immaterial Textual Note for 798
798 Enter Horatio, and Marcellus...

View Material Textual Note for 798
798 Enter Horatio, and Marcellus...