Getting Started. To start Vi, open a terminal or console and simply type vi (without the quotation marks) followed by the name of any existing file or a new file you want to create. Vi works in two main modes, one for editing text and the other for giving commands.To switch between the two modes you use the I and Esc keys.etting Started. To start Vi, open a terminal or console and simply type vi (without the quotation marks) followed by the name of any existing file or a new file you want to create. Vi works in two main modes, one for editing text and the other for giving commands.
(May 2009) Hypermobility, also known as double-jointedness, describes joints that stretch further than normal. For example, some hypermobile people can bend their thumbs backwards to their wrists, bend their knee joints backwards, put their leg behind the head or perform other contortionist tricks. It can affect one or more joints throughout the body.
Page last modified: June 14, 2009 Disorders where one eye is higher than the other often cause vertical double vision (diplopia). Common causes include: Disorders where one eye is higher than the other often cause vertical double vision (diplopia). Common causes include: 1  Ocular muscle weakness (called hyper deviation).2  Central ocular control disturbances (here it is called skew).3  Otolithic imbalance (also called skew).hen it occurs even when both eyes are viewing, it is called a hyper deviation. Hyperphoria and hyperdeviation generally refer to the situation where the cause is known. For example, ocular palsies such as 4th nerve palsy can cause a hyper deviation or phoria.