What are (1) [NP e], (2) control PRO; pro, other instances, and (3) 'e' in the examples? ('NP' here is actually a subscript in the paper)
I'm reading Barbara Abott's 'Definiteness and Indefiniteness.' In its 'Introduction,' she enumerates definite noun phrases. In the list I see something like this:
NP type: [NP e]
More details: control PRO; pro; other instances of ellipsis
Examples: Mary tried e to fly; [on a pill packet] e contains methanol [=Ariel 1988, ex. 7a]
What are (1) [NP e], (2) control PRO; pro, other instances, and (3) 'e' in the examples? ('NP' here is actually a subscript in the paper)