Type ‘T’, for example, and a list of options beginning with ‘Trans’ appear.

Facebook says it listened to a network of LGBT advocacy organizations to source the list.

One year on, the options have expanded to include the free-form field.

“Now, if you do not identify with the pre-populated list of gender identities, you are able to add your own,” the company said in a statement.

“As before, you can add up to ten gender terms and also have the ability to control the audience with whom you would like to share your custom gender.

“We recognise that some people face challenges sharing their true gender identity with others, and this setting gives people the ability to express themselves in an authentic way.”

Ahead of this year’s Sydney Gay & Lesbian Mardi Gras there are also Facebook Pride Stickers to signify your gender, sexuality and other interests.