Found the following hamletworks.org entries referring to line 324

View Commentary Note for 323
323 So excellent a King, that was to this1.2.139

View Commentary Note for 324
324 Hiperion to a satire, so louing to my mother,1.2.140

View Immaterial Textual Note for 324
324 Hiperion to a satire, so louing to my mother,1.2.140

View Material Textual Note for 324
324 Hiperion to a satire, so louing to my mother,1.2.140