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January 21, 2017

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In this Wednesday, Feb. 12, 2014, photo, Facebook software engineer Brielle Harrison demonstrates expanded options for gender identification at her company's Menlo Park, Calif., headquarters. Harrison, who helped engineer the project, plans to switch her identifier to "Trans Woman."

Noah Berger / AP

In this Wednesday, Feb. 12, 2014, photo, Facebook software engineer Brielle Harrison demonstrates expanded options for gender identification at her company's Menlo Park, Calif., headquarters. Harrison, who helped engineer the project, plans to switch her identifier to "Trans Woman."