Simple English definitions for legal terms
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A directory requirement is a suggestion or recommendation to do something, but it is not required. It is different from a mandatory requirement, which is something that must be done. The word "should" is often used to introduce a directory requirement, while "shall" is usually used for mandatory requirements.
A directory requirement is a type of instruction that is recommended but not mandatory. It is often introduced by the word "should" or "shall" (which is usually a mandatory word).
In the first example, attending the training session is advisable but not required. In the second example, submitting proposals by the deadline is recommended, but there may be some flexibility.
Directory requirements are often used in contracts or legal agreements to provide guidance on how parties should behave, without imposing strict obligations.