As automatic-layout moves of bezier-connected (or curve-connected) shapes can clearly engender unwanted mid-points (especially when the gap between rows is relatively small), in ver 0.143 I have added an rm (remove midpoints) command.



Thanks to Simon Knight for drawing my attention to this issue, which brings my current shopping list of bugs (in OG's built-in automatic layout) to five:

1. Specified rank separations inconsistently applied,
2. specified object separations inconsistently applied,
3. ambiguities introduced by overlapping orthogonal connectors,
4. spurious asymmetries introduced into symmetric outlines,
5. and spurious mid-points introduced into bezier connectors.

At least 2 of these are secondary consequences of Graphviz's inability to centre parents over their child ranges.

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