lines-of-padding

Arguments: outline

Returns the lines-of-padding property of an outline widget. The value may be set at creation time by passing the lines-of-padding initarg to make-instance, or any time later by calling (setf lines-of-padding).

The value of this property should be a non-negative integer, and the default value is 4. When an outline-item is selected in the outline, the widget will automatically scroll vertically as needed so that at least that many items are scrolled into view both above and below the selected item. This provides context around the selected item, especially when the selected item is related in some way to neighboring items.

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Created 2019.8.20.