Types

      LineStyles       = (DoubleLine,SingleLine,NoLine)

    Windows may be surrounded by a single line, double line or no line.

      ShadowStyles     = (LightHash,MediumHash,DarkHash,Solid,NoShade)

    Windows may have different types of shadows, either a light hash
    (ASCII character '#') or a medium hash (ASCII character ('#') or
    a dark hash (ASCII character '#').  These are useful on mono
    monitors or layouts like the PC Tools Version 6 display.

    Windows need not have a shadow but my favorite window shadow (for
    colour systems) is a solid shadow (ASCII character '#').

      HideOrShow      = (Hidden,Visible)

    Status for windows, whether hidden or visible.

      SlideBarInfo     = Record
                           X1,Y1,X2,Y2        :Word;
                           Forg               :Word;
                           Back               :Word;
                           MainChar           :Char;
                           ButtonChar         :Char;
                           UpLeftChar         :Char;
                           DownRightChar      :Char;
                           CurPos             :LongInt;
                           MaxPos             :LongInt;
                           ButtonScreenPos    :Word;
                           ButtonNum          :Word;
                           BarButtonNum       :Word;
                           ButtonLeftUpNum    :Word;
                           ButtonRightDownNum :Word;
                         End;

    This is used to create,  retain  and  update  the  window slide bars.
    The slide screen bar positions,  colour,  ASCII  characters, position
    and button information is stored.

      ButtonListPtr    = ^ButtonList;

      ButtonList = Record
                     X1,Y1,X2,Y2:Word;
                     Special    :Boolean;
                     Key        :Char;
                     Number     :Word;
                     Next       :ButtonListPtr;
                   End;

    The  screen  coordinates,  equivalent  keyboard  keys,  number  of  a
    button, and a pointer  to  the  next  button  in  the list are stored
    with this type.