Klingon plugin for Multiling O Keyboard. This is not an independent app, please install OKeyboard along with this plugin. Instruction: . ⑴ Install this plugin and Multiling O Keyboard. ⑵ Run O Keyboard and follow its setup guide. ⑶ Slide space bar to switch languages. Please email if you have any questions. Wikipedia: The Klingon language (tlhIngan Hol, pronounced /ˈt͡ɬɪ.