Found the following hamletworks.org entries referring to line 3068-9

View Immaterial Textual Note for 3067
3067 Thus {didst} <didest> thou.4.7.57

View Material Textual Note for 3068-69
3068 King. If it be so Laertes,4.7.58
3068-9 As how should it be so, | how otherwise, 
Will you be rul'd by me?