uses
System,
LazLoggerBase,
Graphics,
Controls,
Classes,
SysUtils,
Math,
Dialogs,
SpkGraphTools,
SpkGUITools,
SpkMath,
spkt_Appearance,
spkt_Const,
spkt_Dispatch,
spkt_Exceptions,
spkt_BaseItem,
spkt_Items,
spkt_Types,
spkt_Tools;