# What is the comment shortcut?

I went to a Wolfram Technologies workshop a few weeks ago and the presenter showed us a keyboard shortcut that when a block of input is selected, the shortcut puts the block of selected input in (* comment *) brackets. I've forgotten what the shortcut is though. Does anyone know what it is?

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On my Mac, it's ⌘ /. –  hftf Apr 14 '14 at 11:32
and Alt+/ on Windows. –  kglr Apr 14 '14 at 11:42
It's in one of the menus; the Edit menu I believe. –  Sjoerd C. de Vries Apr 14 '14 at 12:05
It's Alt+/ on Linux. (On a german keyboard, this would be Alt+Shift+7.) –  Stefan Apr 14 '14 at 13:34
On Windows, you can also use context menu short cut: RightClick+u –  kglr Apr 14 '14 at 15:18

The short-cut keys for various actions can usually be found directly in the menu. Here on OSX you see the +/ at the right side under Un/Comment Selection:

As pointed out in the comments for various systems the short-cut to comment a selection is

• +/ for Mac OS X
• Alt+/ for Windows
• Alt+/ for Linux
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Unfortunately on a german keyboard it's impossible to get [Alt]+[/]. It behaves like [Alt]+[7] and you'll change the style to "Text". But somewhere on SE there is a solution for mapping the commands to other keys. –  Phab Oct 23 '14 at 9:17