The SKEY Redefinition file is a look up table for redefined Isogen SKEYs. It is an optional file when user-defined SKEYs are specified.
New SKEY specifies the re-defined Isogen Symbol key.
Mapped SKEY specifies the SKEY to which the new SKEY is to be mapped.
During a default installation of the software, a sample SKEY.def file is delivered to the <installation drive>:\Program Files\SmartPlant\Isometrics\I-Convert\Samples folder.