Found the following hamletworks.org entries referring to line 3690

View Commentary Note for 3688, etc.
3688 Then Hamlet dooes it not, Hamlet denies it,5.2.236
3689 Who dooes it then? his madnesse. Ift be so, 
3690 Hamlet is of the faction that is wronged, 

View Immaterial Textual Note for 3688, etc.
3688 Then Hamlet dooes it not, Hamlet denies it,5.2.236
3689 Who dooes it then? his madnesse. Ift be so, 
3690 Hamlet is of the faction that is wronged, 3690 

View Material Textual Note for 3688, etc.
3688 Then Hamlet dooes it not, Hamlet denies it,5.2.236
3689 Who dooes it then? his madnesse. Ift be so, 
3690 Hamlet is of the faction that is wronged, 3690