COLUMN
------

Controls output format for columnar reporting:

COL[UMN] [column_name [CLE[AR] |
                       FOR[MAT] format_spec |
                       HEA[DING] heading_text |
                       ON |
                       OFF...]]

Issuing the COLUMN command with no parms will display 
a list of current columns.

The CLEAR command erases a column definition.

ON/OFF enables/disables the format settings for a column.

The FORMAT command specifies the display format as follows:

  To format the width of a character string, follow the A with
  an integer.  To set the column ABC to a width of 10 use:

      COLUMN ABC FORMAT A10;

   The following elements are valid for numeric formatting

   Element  Function
   -------  -----------------------------------------------
     $      Display a leading dollar sign
     ,      Places a comma in the output
     .      Marks the location of the decimal point in the output
     0      Spot to start displaying leading zero's
     9      Used to display the number of significant digits

   If a numeric value overflows the format string, the result will
   display as all #'s.
