Ido Ido () is a constructed language created with the goal of becoming a universal second language for speakers of different linguistic backgrounds as a language easier to learn than ethnic languages. This intended usage parallels the current use of English as a lingua franca, and of French, Latin, and Greek in earlier eras. Ido
Open content Open content, a neologism coined by analogy with "open source", describes any kind of creative work published in a format that explicitly allows copying and modifying of its information by anyone, not exclusively by a closed organization, firm or individual. The largest open content project is Wikipedia. Open_content