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 Class TRGroup   FiveWin Report Engine Group objects
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 DATAs
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 oReport   Its TReport object container.
 aTotal    An array of numeric totals, one for each report column.
 bGroup    A codeblock which holds the group expression.
 bHeader   A codeblock that returns the header of the group.
 bFooter   A codeblock that returns the footer of the group.
 bHeadFont A TFont object to use to print the group header.
 bFootFont A TFont object to use to print the group footer.
 cValue    It keeps the latest group evaluated expression.
 nCounter
 lEject    If eject is to be performed on each group change.

 METHODs
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 New       Method constructor: creates a new TRGroup object.                 .
 Reset     Resets the accumulated total value of all aTotal to 0.            .
 Header    Prints the header of the group.                                   .
 Footer    Prints the footer of the group.                                   .
 Total     Prints the totals of the group.                                   .
 HeaderHeight  Returns the height of the group header.                       .
 FooterHeight  Returns the height of the group footer.                       .
 Evaluate  Calculates the group expression                                   .
 Check     Checks if the group condition has changed                         .