Found the following hamletworks.org entries referring to line 2743+1
View Commentary Note for 2743+1
2743+1
{Enter Hamlet, Rosencraus, &c.}
2743+1
4.4.9
View Immaterial Textual Note for 2743+1
2743+1
{Enter Hamlet, Rosencraus, &c.}
2743+1
4.4.9
View Material Textual Note for 2743+1
2743+1
{Enter Hamlet, Rosencraus, &c.}
2743+1
4.4.9