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##More arrow de-overlap
##arrow deoverlap
##After shifting the endpoints, arrows may still overlap, for example if they go around the same block they will follow the contour of that block. By setting 'routing.block_others=yes' (the default) on the arrow drawn earlier will prevent any later arrows that had overlapping ends with it from crossing it or getting closer to it than 'routing.arrow_distance'. You can specify a number via 'routing.order} to govern in which the arrows in overlapping by their end are re-laid out after their endpoints have been shifted. Note that arrows never block other arrows that have no overlapping ending with them.
cell a {
use bottom=first;
box A;
box B[size=40];
box C,D;
A->C;
A->D [color=red];
}
below cell b {
use bottom=first;
box A;
box B[size=40];
box C, D;
use routing.block_others=no;
A->C;
A->D [color=red];
}
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