Found the following hamletworks.org entries referring to line 2672

View Immaterial Textual Note for 2672+1
2672+1 {Enter Rosencraus and all the rest.} 

View Commentary Note for 2672-2672+1
2672 Or not at all. <Enter Rosincrane.>4.3.11
2672+1 {Enter Rosencraus and all the rest.} 

View Material Textual Note for 2672-2672+1
2672 Or not at all. <Enter Rosincrane.>4.3.11
2672+1 {Enter Rosencraus and all the rest.} 

View Immaterial Textual Note for 2672
2672 Or not at all. <Enter Rosincrane.>4.3.11