![](/s/en_GB/3145/191/_/images/icons/emoticons/warning.png)
Double-click on the extension you would like to rename and the following window appears:
![Renaming an extension](http://www.tri-line.com/common/img/documentation/tim_professional/renaming_extension.png)
Overtype the new name for the extension and then press the
button. You can edit any other extension property in the same way, simply overtype before pressing .
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