/// <summary>
 /// Adds an importation error
 /// </summary>
 /// <param name="specifications"></param>
 /// <param name="p"></param>
 /// <param name="error"></param>
 private void AddError(DataDictionary.Specification.Specification specifications, Paragraph p, string error)
 {
     specifications.AddError(error);
     NewDocument.Errors.Add(new ImportationError(error, p));
 }