!!! Overview
[{$pagename}] indicate the circumstances under which the value of the data [attribute] can be (re)defined.

Specific details of [{$pagename}] are context dependent.

Typical values would be:
* [ReadOnly] - The data [SHALL NOT] be modified.
* [ReadWrite]  The data [MAY] be updated and read.
* [Immutable]  The data [MAY] be defined at data creation 
* [WriteOnly]  The data [MAY] be updated at any time.  Values __MAY NOT__ be returned
* [Operational|OperationalAttribute] - Implies the attribute may only be modified by the System.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]