Found the following hamletworks.org entries referring to line 220

View Commentary Note for 220
220 King. We doubt it nothing, hartely farwell.1.2.41

View Immaterial Textual Note for 220
220 King. We doubt it nothing, hartely farwell.1.2.41

View Material Textual Note for 220
220 King. We doubt it nothing, hartely farwell.1.2.41