Shortcut: Ctrl+Shift+/ writes an interrobang character. Toolbar button displays window of characters to choose.
The interrobang extension provides two easy ways for you to enter interrobang characters into your online writings.
1. Keyboard Shortcut: Ctrl+? (actually Ctrl+Shift+/) enters an interrobang right at the page you're on.
2. Clicking on the Interrobang button displays a popup window of characters to click on to copy.
For any known issues, please see the FAQ: http://interrobang.dlma.com/