To modify an area in a schematic the schematic must be in design mode first. To enter design mode, press F-11. Select one of the triangular areas by clicking on it. Two handles will appear. The handle at the pointed end of the triangle is used to modify the width (or wrapping size) of the area. The other handle is for setting the location of the area. Click and drag either of these handles to change the location characteristics of the area.
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When an area is selected, a dialog box is presented which contains the properties of the area. As an area is modified by interaction, the properties box is updated to reflect the changes. The properties may also be modified directly in the dialog box. The changes will then cause the area to be updated to reflect the changes made in the dialog box. Again, the changes are not permanent until the schematic is explicitly saved to disk. (in the form of an ARA file)
Near the top of the properties dialog box is the condition. The condition can be edited here, or by clicking on the "…" button to raise the filter edit dialog box. The expression must evaluate to TRUE or FALSE. As a quick example of how this expression may be edited, try setting it to TRUE. Click the apply button and note that all the areas created after this one are now empty. All of the accidents that would have been placed in those areas have been placed in the current area since a value of TRUE means that all accidents 'fit' in this area. Now try setting the condition to FALSE. Upon pressing the apply button, no accidents will be left in the current area. This is because no accidents fit a filter that evaluates to FALSE.
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