Here, format modifiers can be applied, separated by a colon (":"). These modifiers include b for bold, i for italic, and u for underlined text, allowing for a customized and informative visual presentation. Further refining the representation, each edge in the graph symbolizes a reaction connecting two nodes. The default directionality of these reactions is forward, denoted as "->". However, users have the option to alter this directionality to backward ("<-") or bidirectional ("<->") by specifying their preference in the "optional" direction column name in the "reactions" file. rNets comes with two different graphical encodings: "thermo" representing the thermodynamic values of the compounds and the computed kinetic constants and "kinetic" focusing on the concentrations of the compounds and the net rates of the reactions.