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.
IBM continued to set the trend in 1941 by revolutionizing the typewriter industry with the invention of the IBM Executive Electric Typewriter, embodying the IBM spacing principle. Ease, speed, and quality have always been the three dimensions of the IBM Electric Typewriter.