Editing Pro-drop language (section)

==See also==
*{{annotated link|Null morpheme}}
*{{annotated link|Null-subject language}} (NSL)
*{{annotated link|Null subject parameter}} (NSP) – The parameter which determines if languages are pro-drop, marking them as either positive (+) or negative (-) NSP.<ref>{{cite journal |last1=Sessarego |first1=Sandro |last2=Gutierrez-Rexach |first2=Javier |title=Revisiting the Null Subject Parameter: New Insights from Afro-Peruvian Spanish |journal=Isogloss |date=2017 |volume=3 |issue=1 |pages=43–68 |doi=10.5565/rev/isogloss.26|doi-access=free |hdl=10256/15298 |hdl-access=free }}</ref>
*{{annotated link|Zero copula}}; many languages such as Arabic and Hebrew lack a "to be" verb which is implicit in the subject.