The most frequent autonomic symptoms associated with multiple system atrophy are a sudden drop in blood pressure upon standing (orthostatic hypotension), urinary difficulties, and erectile dysfunction in men.
The IBM Selectric typewriter was a highly successful model line of electric typewriters introduced by IBM on 31 July 1961.
At the end of the nineteenth century, the term typewriter was also applied to a person who used a typing machine. Play media Video on the history of typewriters and how they operate The first commercial typewriters were introduced in 1874, but did not become common in offices until after the mid-1880s.