ioChem-BD Reaction Energy Profile Reports is a tool designed to facilitate discovery of reaction mechanisms. After a successful run on a given molecular structure, the results are uploaded into ioChem-BD. Then, this tool enables selecting a set of entries, so all those species participating in the mechanism, and then to add reaction steps, the corresponding mathematical formulas needed for calculating the energy of each reaction step properly, and also to label each step. Figure \ref{292569} depicts a screenshot of the form used to define all that information. Several Series can be defined as well as what we call Variables, actually constant values that make writing the mathematical expressions even easier. Note in Figure \ref{292569} that R1 is defined as the sum of  the reactants (c3+c4), and that simple algebraic  expressions are admitted.