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A provision in a statute, rule of procedure, or the like, that is a mere direction or instruction of no obligatory force and involves no invalidating consequence for its disregard, as opposed to an imperative or mandatory provision, which must be followed. The general rule is that the prescriptions of a statute relating to the performance of a public duty are so far directory that, though neglect of them may be punishable, it does not affect the validity of the acts done under them, as in the case of a statute requiring an officer to prepare and deliver a document to another officer on or before a certain day.

Generally, statutory provisions that do not relate to the essence of a thing to be done, and as to which compliance is a matter of convenience rather than of substance, are directory, while provisions that relate to the essence of a thing to be done, that is, matters of substance, are mandatory.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.

DIRECTORY. That which points out a thing or course of proceeding; for example, a directory law.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
I suspect it is usually reluctance on the part of IT to "permit" business users access to the directory services system.
These are just some of the services that people can expect from Mobile Directory Services," said Booysen.
Second reason for using the active directory directory services is in its cost demands, which are for the organisation much less in the case of establishing Active Directory into the network than use of an adhoc security solution.
The move comes after watchdog Oftel ended BT's near-monopoly of voice-based directory services and allocated numbers with the 118 prefix to rivals.
The NT and Solaris versions of NDS 8 will be the first that do not require a NetWare server to be present to support the directory service.
Yahoo is probably the best-known directory service. A directory starts by organizing sites into very broad categories.
The MessagingDirect LDAP/X.500 enterprise directory (MD Directory) server provides a high-performance, robust global directory service for use within large-scale, heterogeneous environments.
Among such standards, the DEN specification is evolving to offer a standard approach to defining schema for integrating network equipment, such as routers and switches, with a directory service. The companies' joint support for IP, LDAP, DEN and RADIUS continually improve customers' ability to easily integrate heterogeneous private networks with the Internet.
15 December 2016 - US-based mergers and acquisitions advisor Generational Equity's client, US-based phone book publisher Hanson Directory Service has been sold to US-based IP phone systems provider DirecTech, LLC, the firm said.
Etisalat displays its Voice Activated Directory service, an innovative solution developed as part of enhancing contact centre services, at this year's Middle East Communications (MECOM 2008) conference and exhibition, which will be held in Abu Dhabi from May 26 to 28.
NINE out of 10 hardnosed professionals are still devoted "mummy's boys and girls", a phone directory service claims.

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