这一发现表明AI在办公软件领域的应用已从简单文本处理进化到复杂的多轮编辑和精确修改，这可能彻底改变知识工作者与生产力工具的交互方式，释放新的工作流程可能性。

Typing Skills: Fields of Typing. 16 mm, Instructional film. Periscope Film, 1972. https://www.youtube.com/watch?v=LvF0atKsggY.

Typing Skills: Fields of Typing <br /> Coronet Instructional Films, a division of Esquire, Inc., 1972<br /> Lawrence W. Erickson, Ed.D. Professor of Education, University of California, Los Angeles<br /> Production: Coronet Films and Creative Establishment, Inc.<br /> Director and Writer: Don B. Klugman<br /> Photography Robert Flaxman<br /> Editing: Barbara Kaplan

Periscope Film XD72104 archived at https://stock.periscopefilm.com/xd72104-typing-skills-fields-of-typing-1972-typewriter-based-careers-educational-film/

Alternate version at https://www.youtube.com/watch?v=lMmsE6GMIR8

Warm ups of fingers

Rules of good typing - concentrate on the copy

Typewriters in the piece: <br /> - Olivett editor 5<br /> - Others...

• copy typing - types material already written or typed
• setting margins
• centering letters on page
• formatting and spacing
• double spacing with wide margins
• editor's marks

Backspace from center method for setting tab stops

Uses for typewriters:<br /> - check writing - billing - chain feeding - financial records and reports - filling in forms - carbon copies

index and file cards - inserted into a pleated page which may have lines.

“Business Machines.” The Journal of Business Education, September 1, 1930. https://www.tandfonline.com/doi/abs/10.1080/00219444.1930.10771593.