The preface introduces an edited version of the book "Making Sense of Functional Grammar" written by Linda Gerot and Peter Wignell. It explains that the original versions are difficult to find in Bekasi, so the editor decided to rewrite parts of it for students and teachers at STKIP Panca Sakti Bekasi. The editor hopes the materials will help students learn about functional grammar and genre identification in an understandable way. The facts page provides publication details about the original book.