November 11, 2013 20 years ago an American professor found he had a problem. In the course of his work he'd get files from colleagues that he described as typewritten, not typeset. What he meant was that the authors had used typewriter conventions when creating the files on their computers. They would end a sentence and then put in two spaces, they would use double dashes rather than em dashes, and they would use a lower case L instead of the number one. He had to fix all these problems so that they conformed to typesetting conventions. more... See more text