Found the following hamletworks.org entries referring to line 978

View Commentary Note for 978
978 And with a looke so pittious in purport2.1.79

View Immaterial Textual Note for 978
978 And with a looke so pittious in purport2.1.79

View Material Textual Note for 978
978 And with a looke so pittious in purport2.1.79

View Commentary Note for 991
991 He raisd a sigh so pittious and profound2.1.91