The Equation Mapping file is an optional file. It is a look up table showing how an equation map number is assigned to the Isogen SKEY.
SKEY specifies the Isogen symbol key.
Equation No specifies the number of the equation in the The Map Equations File.
During a default installation of the software, sample PDMS-Equation.map and PDS-Equation.map files are delivered to the <installation drive>:\Program Files\SmartPlant\Isometrics\I-Convert\Samples folder.