The column ruler command displays a ruler on the screen that you can use to determine column positions.
RSD documentation calls the column ruler the horizontal ruler .
There are two ruler commands, R and HR . R creates a temporary ruler and HR creates a permanent, or held ruler. A temporary ruler disappears as soon as you scroll the screen forward or backward. A held ruler remains until it is deleted with HRD or RES . The R command can be used to place a temporary ruler anywhere in the report display.