Book presence
Book presence refers to whether a feature of Toki Pona is present or absent in the official books. It usually specifies which book the feature is first attested in, lipu pu or lipu ku, as a rough indicator of era.
Words[edit | edit source]
Words are often categorized as nimi pu, nimi ku suli, and nimi ku lili. The ijo Linku usage categories were created to track changing usage since the publication of ku.