sentence: These include libraries like paxtools ,57 rBiopaxParser ,58 and BioPAX-pattern ,59 and visualization and analysis tools like Cytoscape and cyPath2 ,60 among others.However useful , the primary goal of BioPAX is not to satisfy data visualization but to coordinate its forces with the Systems Biology Graphical Notation ( SBGN , http://www.sbgn.org/ ) ,61 community and to ensure that BioPAX can be visualized through SBGN.SBGN is a community-developed , standard graphical language for unambiguously representing diverse biochemical and cellular events .