Principal Characteristics of OPM

The following list identifies the principal characteristics of OPM:

• Dynamic binding

  When program A wants to call program B, it just does so. This dynamic program call is a simple and powerful capability. At runtime, the operating system locates program B and ensures that the user has the right to use it.

  An OPM program has only a single entry point, whereas, each procedure in an ILE program can be an entry point.

• Limited data sharing

  In OPM, an internal procedure has to share variables with the entire program, whereas, in ILE, each procedure can have its own locally-scoped variables.