The set of ported LAN Manager functions supported by Microsoft® Windows® is based on the set of LAN Manager functions specified in the LAN Manager 2.x Programmer's Reference. They are not a part of the Microsoft® Win32® application programming interface (API).
Certain LAN Manager functions are obsolete. Other LAN Manager functions have been superseded. In addition, the Microsoft® Windows NT® operating system adds to the set of networking functions introduced by LAN Manager.