Reference database construction
Right click on Reference database to Import database (.xls), you can import a reference database to construct your own reference database. Available reference databases including BiGG, KEGG and Model SEED databases can be found and downloaded from http://sb.nhri.org.tw/GEMSiRV/en/Reference_Databases.
Or, you can right click on the model you imported to Add rxn&met to the Ref. DB, so that you can add the information about metabolites and reaction described in the model to the reference database that you have created.
You can right click on the Reaction Index of Reference database to evaluate charge/mass balance of equation.
You can add/edit the equation of reaction by using equation dialog or type directly. For example, for reaction PGK (phosphoglycerate kinase), you can type “[c] : 3pg + atp <==> 13dpg + adp” in its equation or you can enter the EQUATION dialog to edit its content.