<PackageReference Include="Relativity.API" Version="21.0.1" />

Relativity.API.Foundation.MassOperations.ReplaceActionOptions

public enum ReplaceActionOptions
The different types of actions for Mass Replace.
Append = 1

Appends to the end of the field.

Replaces the selected parts of the field.

Insert = 2

Inserts into the beginning of the field.

Replace the entire field.