Bis is a Latin prefix or suffix designating the second instance of a thing, thus preceding ter. An example in recent modern usage is the ITU-T modem standard from the late 20th century, V.32bis. Bis can also refer to:
Pachelbel's Canon in D major, a piece of chamber music scored for three violins and basso continuo and originally paired with a gigue in the same key, experienced a tremendous surge in popularity during the 1970s.
Meta, Super and Hyper are modifier keys that modify the key's function. They are specific to the Symbolics Space Cadet Keyboard used on Lisp machines back in the day. Their function is sometimes emulated using other keys. Meta The Meta key is not found on modern keyboards. Its use is sometimes emulated with AltGr (on some international layouts) or the right Alt key on the others. In addition: Sun keyboards have a meta key (â) as well Emacs calls Esc the Meta key Super The Super key is equivalent to or the â (command) key. In Ubuntu, it's just another name for . Hyper Hyper is the fourth (counting Ctrl) and last modifier on the Space cadet keyboard.