Alternatively referred to as Control 5 and C-5, Ctrl+5 is a shortcut key most often used to switch to the fifth tab in a browser or other program with tab support.
How to use the Ctrl+5 shortcut key
The "5" used with this shortcut is the "5" at the top of the keyboard and not on the numeric keypad.
Ctrl+5 in Microsoft Excel
Using Ctrl+5 in an Internet browser
If you only have four tabs open, pressing Ctrl+5 does nothing.
Ctrl+5 in Microsoft Word
In Microsoft Word, Ctrl+5 changes the line, paragraph, or all highlighted text to 1.5 line spacing.
Related keyboard shortcuts
Below are links to related keyboard key and keyboard shortcut pages.