Alternatively known as Control 7 and C-7, Ctrl+7 is a shortcut key most often used to switch to the seventh tab in a browser or another program with tab support.
How to use the Ctrl+7 shortcut key
The "7" used with this shortcut is the "7" at the top of the keyboard and not on the numeric keypad.
Using Ctrl+7 in an Internet browser
If you only have six tabs open, pressing Ctrl+7 does nothing.
Related keyboard shortcuts
Below are links to related keyboard key and keyboard shortcut pages.