Found the following hamletworks.org entries referring to line 3898-9

View Commentary Note for 3897, etc.
3897 For he was likely, had he beene put on,5.2.397
3898-9 To haue prooued most {royall;} <royally:> | and for his passage,5.2.398

View Material Textual Note for 3897, etc.
3897 For he was likely, had he beene put on,5.2.397
3898-9 To haue prooued most {royall;} <royally:> | and for his passage,5.2.398