Found the following hamletworks.org entries referring to line 268-9

View Material Textual Note for 268-9
268-9 King. Tis sweete and commendable | in your nature Hamlet,1.2.87

View Commentary Note for 268
268-9 King. Tis sweete and commendable | in your nature Hamlet,1.2.87

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268-9 King. Tis sweete and commendable | in your nature Hamlet,1.2.87

View Commentary Note for 299
299 Our chiefest courtier, cosin, and our sonne.1.2.117