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.
Hypermobility, as doctors call it, isnât a medical condition in itselfâbut it does come with potential health risks. Everyone knows someone who can bend their fingers backward, put their legs behind their head, or easily twist themselves into the most difficult positions in yoga class. But whatâs does it really mean when someone is âdouble-jointedâ? For the scoop on the good, the bad, and the downright weird, we spoke with two joint health experts who know the topic well. The first thing to understand, says Alice Chen, MD, a physiatrist at the Hospital for Special Surgery in New York City, is that double-jointed isnât a medical term.