Summary of changes for z/OS Version 2 Release 1 (V2R1)

The following chapters contain new or updated content for Enterprise COBOL V5.1:

• Common interfaces and conventions
• Program initialization and termination
• Common interfaces and conventions for AMODE 64 applications

Changes have been made to the __ae_autoconvert_state() interface; see __ae_autoconvert_state() — returns automatic conversion state of thread for more information.

Updates have been made to the options control block for AMODE 64 large page and heap check zone support; see Options control block for more information.