DATA
 oReport      Its TReport object container.
 aData        An array with all data codeblocks.
 aTitle       An array with all titles codeblocks.
 aPicture     An array with all pictures.
 bDataFont    A codeblock that returns the font to use for the data.
 bTitleFont   A codeblock that returns the font to use for the title.
 bTotalFont   A codeblock that returns the font to use for the total.
 bTotalExpr   A codeblock to return when a total must be calculated.
 cTotalPict   A string holding the PICTURE to use for the data.
 nWidth       The width of the column in pixels.
 nDataHeight  The height of the column data.
 nTitleHeight The height of the column title.
 nTotal       The accumulated total already calculated for the column.
 nCol         The column position if defined.
 nSize        The width in characters in pixels if defined by the user.
 nPad         The relative position inside the column: LEFT, CENTER, RIGHT
 nPen         The Report pen elements to use
 lTotal       If the column has total
 lShadow      If the column has to be filled with a shadow background
 lGrid        If the column has to be bordered with lines
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 METHODS
 New          Method constructor: creates a new column.
 Stabilize    Stabilizes the column. It is called by the report stabilize.
 SayTitle     Prints its title.
 SayData      Prints its data.
 SayTotal     Prints its total.