Found the following hamletworks.org entries referring to line 2142

View Commentary Note for 2141-42
2141-2 {Pol.} <All.> Lights, lights, lights. Exeunt | {all but Ham. & Horatio.} 
2142 <Manet Hamlet & Horatio.>..

View Material Textual Note for 2141-42
2141-2 {Pol.} <All.> Lights, lights, lights. Exeunt | {all but Ham. & Horatio.} 
2142 <Manet Hamlet & Horatio.>..