Found the following hamletworks.org entries referring to line 3310-1

View Commentary Note for 3310-11
3310-1 Clow. Mine sir, {or} |<O> a pit of clay for to be made. 3310 

View Material Textual Note for 3310-11
3310-1 Clow. Mine sir, {or} |<O> a pit of clay for to be made. 3310