Found the following hamletworks.org entries referring to line 768

View Commentary Note for 768
768 A couch for luxury and damned incest.1.5.83

View Immaterial Textual Note for 768
768 A couch for luxury and damned incest.1.5.83

View Material Textual Note for 768
768 A couch for luxury and damned incest.1.5.83

View Commentary Note for 776
776 Adiew, adiew, {adiew,} <Hamlet:> remember me. <Exit>1.5.91