See the Secret Excel Error Number
I've been working with Excel for approximately 125 years, and never realized that there was a hidden number in the worksheet error messages.
For example, if you try to insert a column in Excel 2007, you might see this message that warns "Cannot shift objects off sheet".
To see the specific error number for that message, you can press the keyboard shortcut:
Ctrl + Shift + I
The number appears in the bottom right corner of the error message.
That number could be useful if you're doing a Google search, to find a solution to a problem, or if you're searching in the Microsoft Knowledgebase for specific help.
Did you know those error numbers were hidden in the messages?