ellipse:A closed curve defined by two fixed points such that the sum of the distances from any point on the curve to the two fixed points is constant.
elliptical region:A region with the shape of an ellipse.
end cap:A geometric-pen attribute that specifies the shape of the pen. There are three end caps: flat, round, and square.
enhanced metafile:One of two metafile formats, the enhanced metafile-format is is the format which is used in applications written for Win32. This format consists of a header, a table of handles to GDI objects, a private color palette, and an array of metafile records.