The Layout menu controls the layout algorithm for a hierarchical chart. It is available only in hierarchy views (invocation, callby, include, includeby).
Crossing - a left-to-right view, minimizing space used but sacrificing some readability by permitting lines between entities to cross.
Horizontal Non-Crossing - a left-to-right layout, using more space in some situations but enhancing readability by having no crossing lines.
Vertical Non-Crossing - an top-to-bottom layout similar to Horizontal Non-Crossing.