type TSPdfBasicRange = class
public
    function Create();
    function Do();virtual;

public
    StartX: real;
    StartY: real; // range的起始坐标(x,y)
    EndX: real;
    EndY: real; // range的结束坐标(x,y)
    Width: real;
    FixedHeight: real;
    DynamicHeight: real;
    LowerBound: real;
    [weakref]TSPage: TSPage;
end;

function TSPdfBasicRange.Create();
begin
    {self.}StartX := 0;
    {self.}StartY := 0;
    {self.}EndX := 0;
    {self.}EndY := 0;
    {self.}Width := 0;
    {self.}FixedHeight := 0;
    {self.}DynamicHeight := 0;
    {self.}LowerBound := 0;
    {self.}TSPage := nil;
end;