FInfoShow(FName,R,C,Rs,Cs,Clr,Shadow) --> true/false:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Functions:
~~~~~~~~~~
  It enables to select the file after the FName mask and to view it by
  the FInfo class object. The R,C,Rs,Cs,Clr,Shadow  parameters are
  transferred down to method Init of Box class. They give position,
  size and color of viewed file window. The window title is created
  by function FinfoShow() by the selected filename.

Parameter description:
~~~~~~~~~~~~~~~~~~~~~~
FName   select mask
R       upper window border row
C       left window border column
Rs      number of window rows (without the border and the shadow)
Cs      number of window columns (without the border and the shadow)
Clr     clipper color definition (text string)
Shadow  logical value to set the window shadowed (true) or no

Return value:
~~~~~~~~~~~~~
the function returns true if there was selected correct file to view, and
performed the FInfo class object.

Source code is in file  C_FInfo.prg