How to create a file with a . dot prefix in Windows Explorer

If you right click in Windows and try to make a new text file with a . period/dot in front of it:

Name the file...something like .gitignore, for example.

You'll get the "You must type a file name" error.

But, rather than typing .gitignore, if you include an ending dot also, like

.gitignore.

Then it works fine.

Thanks, Mads, for the tip!