(AX-3.7 and later) SyntheticModuleFile (synthetic module) is a synthetic Java archive (.sjar) that allows the creation of memory-resident modules and types programmatically at station runtime. Synthetic modules differ from “standard” .jar (non-synthetic) modules in a number of ways, and have a special default “Synthetic Module File View” for editing contents.

For details, refer to the NiagaraAX Synthetic Modules engineering notes document.