||A CoordinateRect represents a rectagular region in the xy-plane, specified by
||A Crosshair is a small cross, 15 pixels wide and high, that is drawn in a
CoordinateRect at a specified point.
||A DisplayCanvas is a drawing area that can contain one or more
||A DraggablePoint can be added to a DisplayCanvas, where it appears as a small
disk, square, or cross.
||A Drawable object can be added to a CoordinateRect, which is itself in a
||A DrawBorder object is just a simple border around the edges of its
CoordinateRect, with a specified width, in pixels, and a specified color.
||A DrawGeometric object is a geometic figure such as a line or rectangle that
can be drawn in a CoordinateRect.
||A DrawString object displays a string, possibly multi-line, in a
DisplayCanvas, inside the rectangular region of a CoordinateRect.
||A Graph1D represents the graph of a function of one variable, to be displayed
in a given CoordinateRect.
||A Grid object draws a graph paper-like grid on a Canvas.
||A LimitControlPanel has four input boxes for specifying the xmin, xmax, ymin,
and ymax of a CoodinateRect.
||A MouseTracker can be added to a CoordinateRect in a DisplayCanvas to respond
to user mouse actions in the rectangular area occupied by the CoordinateRect.
||When a Panner object is added to a CoordinateRect, it becomes possible to
"grab" the coordinate rectangle and pan it (that is, slide it around by
moving it with the mouse).
||A ParametricCurve is defined by two functions, x(t) and y(t) of a variable,
t, for t in a specified interval.
||RationalLabels provide a way to label an axis with fractions, with an
optional constant factor such as pi.
||A RiemannArcLength displays segments used in computing the length of a curve.
||A RiemannSlice shows one slice in a Riemann sum, useful for area and volume
||A RiemannSumRects calculates a Riemann sum for a function.
||A ScatterPlot graphs data taken from a DataTableInput.
||A Sequence is like a Graph1D, except that only integer values of the
independent variable are used, and discrete points are plotted.
||A Tangent line is a line that is tangent to the graph of a specified function
of one argument at a specified value of its argument.
||A VectorField displays lines or arrows on a grid of points where the
direction and/or lengths are given by two functions (f1(x,y),f2(x,y)).
||A set of horizontal and vertical axes that look OK and have reasonable,
labeled tick marks.