The above figure shows the top most level of //ELLPACK which allows you to define a new PDE problem, or load an existing saved session. You also specify whether the problem that you will be working on is a two or three dimensional problem. In the above figure, a two-dimensional mode of operation has been selected. The large window in the center of the figure is the session window. There are two different session windows, one for the two-dimensional case and one for the three-dimensional case. In the above figure, the buttons for the two-dimensional editors are to the right of the window and a view of the current working session takes up the rest of the window. The main portion of the session window is called the session template. A user can type in the ELLPACK language that defines his problem or use the editors that //ELLPACK provide to generate the ELLPACK language that is needed to solve the problem.
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