// ** ctor
/// <summary>
/// Initializes a new instance of a FlexCalcEngine.
/// </summary>
/// <param name="flex">Grid that provides data for the engine.</param>
public FlexCalcEngine(FlexCalc flex)
{
// save reference to parent grid
_flex = flex;
// parse multi-cell range references ($A2:B$4)
IdentifierChars = "$:";
}
public CellRangeReference(FlexCalc flex, CellRange rng)
{
_flex = flex;
_rng = rng;
}
