This section of the document describes the functions that are available to application programs for accessing operating system services. Note that only the operating system kernel functions are described in this section, since the Presentation Manager programming interface has not significantly changed, although a number of new Presentation Manager functions have been added.
The following tables list the kernel functions available under OS/2 Version 1.3 and their equivalent function under OS/2 Version 2.0, categorized by function area.