### The MHS Directory User Package

The MHS directory user package contains definitions to support the use of the directory in accordance with the standard X.400 (1988) User Agents and Message Transfer Agents (MTAs) for name resolution, distribution list expansion, and capability assessment. The definitions are based on the attribute types and syntaxes specified in X.402, Annex A. The definitions of the OM classes and OM attributes required to support these MHS attribute types are also included with this package. MHS Directory User Package describes the MHS directory user package in detail.

The object identifier associated with the MHS directory user package is shown in the following code fragment from the xdsmdup.h header file:

/* MDU package object identifier */

/* { iso(1) identifier-organization(3) icd-ecma(12)

* member-company (2)

* dec(1011) xopen(28) mdup(3) } */

#define OMP_DS_MHS_DIR_USER_PKG "\x2B\x0C\x02\x87\x73\x1C\x03"

Part 4 of this guide describes in detail the attributes and data types that make up the OM and directory classes defined in the XDS API packages. Sample Application Programs examines in detail how these packages are used in developing the sample application programs.

###