nl_tokens: Assign the links y0 and y1 based on source / target nodes position plus the link s relative position to other links to the same node
pl_tokens: function computeLinkBreadths ( graph ) { graph . nodes . forEach ( function ( node ) { node . sourceLinks . sort ( ascendingTargetBreadth ) node . targetLinks . sort ( ascendingSourceBreadth ) } ) graph . nodes . forEach ( function ( node ) { var y0 = node . y0 var y1 = y0 // start from the bottom of the node for cycle links var y0cycle = node . y1 var y1cycle = y0cycle node . sourceLinks . forEach ( function ( link ) { if ( link . circular ) { link . y0 = y0cycle - link . width / 2 y0cycle = y0cycle - link . width } else { <mask> . y0 = y0 + link . width / 2 y0 += link . width } } ) node . targetLinks . forEach ( function ( link ) { if ( link . circular ) { link . y1 = y1cycle - link . width / 2 y1cycle = y1cycle - link . width } else { link . y1 = y1 + link . width / 2 y1 += link . width } } ) } ) }