| Open the structure window either by click on "Filter" - "Structure" or by the toolbar. |
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| The structure window allows to choose the filter structure. By choosing a filter topology, the matrix values change too and are displayed in the matrix window. |
| When "Auto Rotate" is activated and the filter specification are changed, the matrix rotates automatically to the chosen filter topology. For filters with many resonators it takes a little time to do all the rotations. |
| The bar on the bottom right allows to change the size of the filter drawings. |
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| To obtain structures with multiple source or load coupling, the "Multiple Source/Load Coupling" box has to be activated. |
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| In the example on the right, source and load are both coupled twice. As a result, a box structure can be choosen. |
