Program model

Now that you have been introduced to how AMODE 64 applications run in Language Environment, you need to understand the model of program management under which Language Environment operates. This chapter provides an overview of the Language Environment model.

The Language Environment program model supports the language semantics of applications that run in the common runtime environment and defines the way routines or programs are put together to form an application. Language Environment implements a subset of the POSIX program model. Features not supported in z/OS Language Environment are indicated in this manual.

The POSIX program model differs somewhat from the Language Environment program model. Refer to Mapping the POSIX program model to the Language Environment program model for more information.