Found the following hamletworks.org entries referring to line 243

View Commentary Note for 242
242 King. Take thy faire houre Laertes, time be thine1.2.62

View Commentary Note for 243
243 And thy best graces spend it at thy will:1.2.63

View Immaterial Textual Note for 243
243 And thy best graces spend it at thy will:1.2.63

View Material Textual Note for 243
243 And thy best graces spend it at thy will:1.2.63