dir">rankdir</A> attribute. If this attribute
is <TT>TB</TT> (the default) or <TT>BT</TT>, corresponding to vertical
layouts, the top-level fields in a record are displayed horizontally.
If, however, this attribute is <TT>LR</TT> or <TT>RL</TT>, 
corresponding to horizontal layouts, the top-level fields are 
displayed vertically.
<P>
As an example of a record node, the dot input
<XMP>
digraph structs {
    node [shape=record];
    struct1 [label="<f0> left|<f1> mid&#92; dle|<f2> right"];
    struct2 [label=