○○○ third person ⪢⪢
He explains that English does not have a third person singular pronoun that does not
identify as male or female.
Zimmer says that more and more "they" is being used to replace the traditional phrase, "he or she".
http://qindex.info/i.php?x=9415
○○○ transgender ⪢⪢
For example, "they" is used for people who
identify as transgender. When former Olympic athelete Bruce Jenner took a female
identity last year, he changed his name to Caitlyn Jenner.
http://qindex.info/i.php?x=9416