Cat communication is the transfer of information by one or more cats that has an effect on the current or future behaviour of another animal, including humans. Cats use a range of communication modalities including vocal, visual, tactile and olfactory. The communication modalities used by domestic cats have been affected by domestication. == Vocal == Cat vocalisations have been categorised according to a range of characteristics. Schötz categorised vocalizations according to 3 mouth actions: (1) sounds produced with the mouth closed (murmurs), including the purr, the trill and the chirrup, (2...

The Dvorak Simplified Keyboard (/d(ə)ˈvɔræk/ d-VOR-ak) is a keyboard layout patented in 1936 by Dr. August Dvorak and his brother-in-law, Dr. William Dealey. Over the years several slight variations were designed by the team led by Dvorak or by ANSI. These variations have been collectively or individually also called the Simplified Keyboard or American Simplified Keyboard but they all have come to be commonly known as the Dvorak keyboard or Dvorak layout. Dvorak proponents claim the Dvorak layout uses less finger motion, increases typing rate, and reduces errors compared to the standard QWERTY...