Years ago, I wrote a filter that reversed lines and reversed characters within each line after padding with blanks. I ran a text file through it, printed the re

Years ago, I wrote a filter that reversed lines and reversed characters within each line after padding with blanks. I ran a text file through it, printed the result, turned the paper upside down, and complained to a sysadmin that the printer was rotating each character in place. (I didn't keep them hanging for long.)