The following list shows the categories of MS-DOS functions:
File management
Directory management
Drive management
File sharing
File control blocks (FCBs)
Input/output control (IOCTL)
Character input/output (I/O)
Memory management
Program management
Networks
National language support
System management
The following sections show the functions in each category. For information about superseded functions, see Section 8.3, “Superseded Functions.” For information about obsolete functions, see Section 8.4, “Obsolete Functions.”