Image regedit_env.png shows the Edit Multi-String window in the Windows Registry Editor, with the following components, top to bottom, left to right:
The label Edit Multi-String at the top left, followed by the labels Value name, and Environment data
A field labeled Value data, with the following two lines, from top to bottom:
https_proxy=http://www-proxy-example.com:80/
http_proxy=http://www-proxy-example.com:80/
At the bottom right, from left to right, are the OK and Cancel buttons.