Gets or sets the prefix used to compose Help keywords from resource names.
Assembly: Microsoft.Build.Utilities.v4.0 (in Microsoft.Build.Utilities.v4.0.dll)
If a task does not have Help keywords associated with its messages, it can ignore this property or set it to null. If this property is set to an empty String, resource names will be used verbatim as Help keywords.
Available since 2.0