Found the following hamletworks.org entries referring to line 527

View Commentary Note for 527
527 {Those} <The> friends thou hast, and their a doption tried,1.3.62

View Immaterial Textual Note for 527
527 {Those} <The> friends thou hast, and their a doption tried,1.3.62

View Material Textual Note for 527
527 {Those} <The> friends thou hast, and their a doption tried,1.3.62