These objects are used by the TReport objects to keep some entire
   lines of the report as the header, footer and the title.

   A TRLine object keeps multiple lines of information, related just
   with one report object component. We call 'line element' to each
   element of the line.

   In a report it is possible to identify some vertical information
   (normally knowns as the report columns) and some other horizontal
   info which remains the same from page to page as the header, the
   footer and the title.

   Managing this report components as objects gives an extraordinary
   flexibility of using different fonts, etc...


 DATA
 oReport   Its TReport object container.
 aLine     An array of codeblocks with all the line data elements.
 aFont     An array of codeblocks with all the fonts to be used.      .

  You may use different fonts with every line element. The same goes for
  the aPad styles.

 aRow      Internally used during printing.
 aWidth    An array with each line element width.
 aPad      An array with each line element pad type: LEFT, CENTER, RIGHT
 nCol      Internally used to print the line.
 nHeight   The height of the line.
 nWidth    The largest width defined of its elements.

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 METHODS
 New       Method constructor: creates a new TRLine object.

   TRLine::New( aLine, oReport, nPad )  -->   Self

   Creates a new TRLine object.

   aLine          An array of codeblocks with all line elements data.

   oReport        Its TReport object container.

   nPad           The pad style to use:

                  LEFT                 1
                  CENTER | CENTERED    3
                  RIGHT                2

    Stabilize Stabilizes the line. Called by the report stabilize method.

   TRLine::Stabilize( [ nFirstRow ] [, nFirstCol ] )  --> nil

   Stabilizes the TRLine object.

   With no parameters it calculates the height and width of the object.
   If the parameters are specified, then the coordinates where the
   object will be printed are defined.

   nFirstCol      The col where start printing the object. By default it
                  is ::oReport:nMargin.

   nFirstRow      The horizontal fixed position where to start printing
                  the TRLine object.

 Say       Prints the line.

   TRLine::Say( [ nStartRow ] )  -->   nil

   Prints the TRLine object with all its lines elements.

   nStartRow      The device row where start printing. By default it uses
                  aRow[ 1 ].