Found the following hamletworks.org entries referring to line 442

View Commentary Note for 442
442 Ham. {I will} <Ile> watch to {nigh} <Night;> {C3} 
442 Perchaunce twill {walke} <wake> againe.1.2.241

View Immaterial Textual Note for 442
442 Ham. {I will} <Ile> watch to {nigh} <Night;> {C3}  
442Perchaunce twill {walke} <wake> againe.

View Material Textual Note for 442
442 Ham. {I will} <Ile> watch to {nigh} <Night;> {C3}  
442Perchaunce twill {walke} <wake> againe.