Found the following hamletworks.org entries referring to line 45

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2 Enter Barnardo, and Francisco, two Centinels. [Bl]  

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44 Hora. Well, sit we downe,1.1.33

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44 Hora. Well, sit we downe,1.1.33

View Commentary Note for 45
45 And let vs heare Barnardo speake of this.1.1.34

View Material Textual Note for 45
45 And let vs heare Barnardo speake of this. 451.1.34