线水平或/和垂直，但从不在线路连接器的其他方向与点的框图

Question

此示例来自

https://stackoverflow.com/questions/7922960/block-diagram-layout-with-dot-graphviz

我怎样才能获得仅水平或/和垂直的连接线，而不会在其他方向上连接。就像链接中主题开头的示例一样。

digraph G {
    graph [rankdir = LR];

    node[shape=record];
    Bar[label="{ \"Bar\"|{<p1>pin 1|<p2>     2|<p3>     3|<p4>     4|<p5>     5} }"];
    Foo[label="{ {<data0>data0|<data1>data1|<data2>data2|<data3>data3|<data4>data4}|\"Foo\" |{<out0>out0|<out1>out1|<out2>out2|<GND>gnd|<ex0>ex0|<hi>hi|<lo>lo} }"];

    Bew[label="{ {<clk>clk|<syn>syn|<mux0>mux0|<mux1>mux1|<signal>signal}|\"Bew\" |{<out0>out0|<out1>out1|<out2>out2} }"];
    Bar:p1 -> Foo:data0;
    Bar:p2 -> Foo:data1;
    Bar:p3 -> Foo:data2;
    Bar:p4 -> Foo:data3;
    Bar:p5 -> Foo:data4;

    Foo:out0 -> Bew:mux0;
    Foo:out1 -> Bew:mux1;
    Bew:clk -> Foo:ex0;

    Gate[label="{ {<a>a|<b>b}|OR|{<ab>a\|b} }"];

    Foo:hi -> Gate:a;
    Foo:lo -> Gate:b;
    Gate:ab -> Bew:signal;
}

交叉发布：https://stackoverflow.com/questions/47501442/lines-horizo​​ntal-or-and-vertical-but-never-in-other-directions-of-line-connector

因为某人的特殊愿望而询问要做什么：

\documentclass{article}
\usepackage{dot2texi}

\usepackage{tikz}
\usetikzlibrary{shapes,arrows}

\begin{document}
\begin{dot2tex}[neato,mathmode]
  digraph G {
    graph [rankdir = LR];

    node[shape=record];
    Bar[label="{ \"Bar\"|{<p1>pin 1|<p2>     2|<p3>     3|<p4>     4|<p5>     5} }"];
    Foo[label="{ {<data0>data0|<data1>data1|<data2>data2|<data3>data3|<data4>data4}|\"Foo\" |{<out0>out0|<out1>out1|<out2>out2|<GND>gnd|<ex0>ex0|<hi>hi|<lo>lo} }"];

    Bew[label="{ {<clk>clk|<syn>syn|<mux0>mux0|<mux1>mux1|<signal>signal}|\"Bew\" |{<out0>out0|<out1>out1|<out2>out2} }"];
    Bar:p1 -> Foo:data0;
    Bar:p2 -> Foo:data1;
    Bar:p3 -> Foo:data2;
    Bar:p4 -> Foo:data3;
    Bar:p5 -> Foo:data4;

    Foo:out0 -> Bew:mux0;
    Foo:out1 -> Bew:mux1;
    Bew:clk -> Foo:ex0;

    Gate[label="{ {<a>a|<b>b}|OR|{<ab>a\|b} }"];

    Foo:hi -> Gate:a;
    Foo:lo -> Gate:b;
    Gate:ab -> Bew:signal;
}
\end{dot2tex}

\end{document}