nl_tokens: draw many polylines of the same color
pl_tokens: function paths ( <mask> , ctx ) { ctx . clearRect ( - 1 , - 1 , w ( ) + 2 , h ( ) + 2 ) ; ctx . beginPath ( ) ; data . forEach ( function ( d ) { if ( ( __ . bundleDimension !== null && __ . bundlingStrength > 0 ) || __ . smoothness > 0 ) { single_curve ( d , ctx ) ; } else { single_path ( d , ctx ) ; } } ) ; ctx . stroke ( ) ; }