Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

Ruler
 
The horizontal line that appears on the top
border of a text window and displays the
positions of indents and tab stops. The ruler can
also be used to change tab stops and indents. To
turn the ruler on and off, choose the View Ruler
command, or click the ruler/ribbon icon (┴) in the
vertical scroll bar.