Found the following hamletworks.org entries referring to line 840

View Immaterial Textual Note for 838
838 Booth. My Lord we will not.1.5.145

View Material Textual Note for 838
838 Booth. My Lord we will not.1.5.145

View Immaterial Textual Note for 839
839 Ham. Nay but swear't.1.5.145

View Commentary Note for 840
840 Hora. In faith my Lord not I.1.5.146

View Immaterial Textual Note for 840
840 Hora. In faith my Lord not I.1.5.146

View Material Textual Note for 840
840 Hora. In faith my Lord not I.1.5.146

View Commentary Note for 841
841 Mar. Nor I my Lord in faith.1.5.146

View Material Textual Note for 841
841 Mar. Nor I my Lord in faith.1.5.146