A law that allows people to change their birth certificate to reflect their gender identity without a court order, surgery, or a doctor’s note, just took effect in Colorado on Jan. 1.

Gov. Jared Polis, Colorado’s first openly gay governor, signed the bill into law in May. The law allows transgender and nonbinary residents of Colorado to change their name on their birth certificate to reflect their new gender identity. They can also revise their gender to “M,” “F,” or, my personal favorite, “X.”