How do I assign different impervious proportions to different polygon groups based on SQL type queries?
You can select multiple polygons by clicking on them while holding the CTRL or SHIFT buttons as per normal window applications. You can also select multiple polygons based on common descriptions, impervious proportions or active status. Once multiple polygons are selected then impervious proportions, descriptions or active state attributes may be changed for all selected polygons by using the buttons on the right hand side of the form.
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