Partial Differential Equation Toolbox |

The Toolbar

The toolbar underneath the main menu at the top of the GUI contains icon buttons that provide quick and easy access to some of the most important functions.

The five leftmost buttons are Draw mode buttons and they represent, from left to right:

| Draw a rectangle/square starting at a corner.
| Draw a rectangle/square starting at the center.
| Draw an ellipse/circle starting at the perimeter.
| Draw an ellipse/circle starting at the center.
| Draw a polygon. Click-and-drag to create polygon sides. You can close the polygon by clicking the right mouse button. Clicking at the starting vertex also closes the polygon.

The Draw mode buttons can only be activated one at the time and they all work the same way: single-clicking a button allows you to draw one solid object of the selected type. Double-clicking a button makes it "stick," and you can then continue to draw solid objects of the selected type until you single-click the button to "release" it. Using the right mouse button or Control+click, the drawing is constrained to a square or a circle.

The second group of six buttons includes the following analysis buttons.

| Enters the Boundary mode.
| Opens the PDE Specification dialog box.
| Initializes the triangular mesh.
| Refines the triangular mesh.
| Solves the PDE.
| 3-D solution opens the Plot Selection dialog box.

The button toggles the zoom function on/off.

| The Menus |  | The GUI Modes |