code: function(border1,border2){
  		border1.ques  = border2.ques;
  		border1.qans  = border2.qans;
  		if(this.board.borderAsLine){
  			border1.line  = border2.line;
  			border1.qsub  = border2.qsub;
  		}
  	}
docs: --------------------------------------------------------------------------- bd.exec.copyBorder()   (expand/reduceBorder用) 指定したデータをコピーする bd.exec.innerBorder()  (expand/reduceBorder用) ひとつ内側に入ったborderのidを返す bd.exec.outerBorder()  (expand/reduceBorder用) ひとつ外側に行ったborderのidを返す ---------------------------------------------------------------------------