bottomLimitWidget: anAbtBasicViewFor horizontally-oriented WkSplitBar widgets, this attribute indicates the bottom most widget to which it is constrained. For vertically-oriented WkSplitBar widgets, this attribute does not apply.
leftLimitWidget: anAbtBasicViewFor vertically-oriented WkSplitBar widgets, this attribute indicates the left most widget to which it is constrained. For horizontally-oriented WkSplitBar widgets, this attribute does not apply.
rightLimitWidget: anAbtBasicViewFor vertically-oriented WkSplitBar widgets, this attribute indicates the right most widget to which it is constrained. For horizontally-oriented WkSplitBar widgets, this attribute does not apply.
topLimitWidget: anAbtBasicViewFor horizontally-oriented WkSplitBar widgets, this attribute indicates the top most widget to which it is constrained. For vertically-oriented WkSplitBar widgets, this attribute does not apply.