Found the following hamletworks.org entries referring to line 29

View Commentary Note for 27
27 Bar. Say, what is Horatio there?1.1.19

View Immaterial Textual Note for 29
29 Bar. Welcome Horatio, welcome good Marcellus,1.1.20

View Material Textual Note for 29
29 Bar. Welcome Horatio, welcome good Marcellus,1.1.20

View Material Textual Note for 7
7 Bar. Long liue the King,1.1.3