1. All the features in the formal writing are absolutely necessary because it makes the purpose of the report evident to the readers. Table of contents identify the information in the report with the specific page number. The executive summary holds the gallery of information with the clear findings. The purpose and the methods of the report are being stated clearly in the executive summary. The executive summary is of half a length compared with the full report. Readers can simply get the overview from the executive summary. The introduction is constructed in such a way that readers do not get any information from the executive summary and it is an essential part of the formal report.