Your copies realize have comments that document everything that's going on.

你们的拷贝的注释,记录了代码做的所有事情。

哈佛公开课 - 计算机科学课程节选

And while Google Docs online spreadsheet and word processing software is stripped down (when compared with Office), it does make it easier for workers to share a single online document and collaborate on it with colleagues--something that gets complicated fast when multiple copies of a Microsoft Word document are blasting around the office.

FORBES: Magazine Article

They should go to their accountant's office in the convent at night and carefully make copies of every document there.

FORBES: God and the devil

And you give copies of this document to mental health centers, the school's Office of Disability and, if the student chooses, to the family.

NPR: Q&A: Prepping Kids With Disabilities For College