The document discusses the key features of an effective thesis statement, including that it should:
1) Be a complete sentence that contains the main idea of the essay.
2) Often be located at the end of the introductory paragraph.
3) Express an opinion or attitude on the topic rather than just stating a fact.
4) Sometimes include subtopics to give the reader a sense of how the essay will be organized.
5) Avoid directly announcing the main topic and should capture the reader's interest.