How to comment lines in 95proxies file?

I constantly switch between working at home and office, and need to use the 95proxies file for proxy at work (for apt-get to work). However, if I need to work at home, I have to delete the file in order to skip the proxy step. It is kind of annoying to keep deleting the file and creating it again. I tried commenting using // and #, but it was of no use. How do I comment code/lines in this file? It is located in /etc/apt/apt.conf.d and the contents are

Acquire::http::proxy "http://proxy.com:8080/";
Acquire::https::proxy "http://proxy.com:8080/";