They're good for logging things, because they print one line (or character at a time), not one page at time. If you redirect your logfile to one, everything wil

They're good for logging things, because they print one line (or character at a time), not one page at time. If you redirect your logfile to one, everything will be committed to paper once the line is finished, and you wont need to buffer things to disk or memory (where they are vulnerable to erasure by hackers or power failures) until you have a full page