handle-above-parent

Arguments: outline

Returns whether an outline widget will draw its outline-items above their parent items whenever their above-parent properties are true. The value may be set at any time with (setf handle-above-parent). The default value is nil.

If some outline-items are given a true above-parent value, then the outline could be switched back and forth between two different views of the data by toggling the value of this handle-above-parent property.

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Created 2019.8.20.