Use the History tab of a rule form to define custom fields, review or restore history snapshots, and maintain usage details. History snapshots are instances of the History-Rule class.
Complete the fields in this section to indicate how this record is used by other application users:
◾Description — Enter text describing the purpose of this record. For class rules, you cannot leave this field blank. Special syntax is supported by list view and summary view rules.
◾Usage — Enter guidance to users of this rule, for example, design-time instructions or special run time considerations. For deprecated rules, this field populates warning messages to other users. As a best practice, describe why the rule is deprecated and provide at least one migration path or alternative.