上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY o Headings and subheadings >Good organizational techniques >Help readers locate information. This way,a reader interested in the necessary materials could quickly find this information without reading the whole report. 1B回后Headings and subheadings  Good organizational techniques  Help readers locate information. • This way, a reader interested in the necessary materials could quickly find this information without reading the whole report