Member variable XbpWindow():clipSiblings Foundation
Determines whether siblings are clipped during graphic output.
The instance variable :clipSiblings contains a logical value that determines whether screen output by the functions of the GRA engine can occur in the areas of the Xbase Parts that have the same parent as self. When two Xbase Parts have the same parent they are considered siblings.
The default value is .T. (true). This means that when coordinates are specified for the output of the Gra..() functions that go beyond the area of the Xbase Part (child), they do not appear in the area of siblings if they overlap. When the value equals .F. (false), the output of Gra..() functions may paint over the object's sibling Xbase Parts in case they overlap. We recommend to have this setting always set to .T. (true).
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