Found the following hamletworks.org entries referring to line 3813

View Commentary Note for 3811, etc.
3811-2 Laer. He is iustly serued, | it is a poyson temperd by himselfe, 
3813Exchange forgiuenesse with me noble Hamlet,

View Immaterial Textual Note for 3811, etc.
3811-2 Laer. He is iustly serued, | it is a poyson temperd by himselfe, 
3813 Exchange forgiuenesse with me noble Hamlet,5.2.329

View Material Textual Note for 3811, etc.
3811-2 Laer. He is iustly serued, | it is a poyson temperd by himselfe, 
3813Exchange forgiuenesse with me noble Hamlet,