1) In a Windows Explorer folder (left), you want to highlight all but the 1st and 6th files in the list so that you can delete all of those files at once.
2) Depress ; click
the .
3) Now, depress ; click
the .
4) Let up (with down); click the .
5) Once all of the unwanted files have been highlighted, let up the and buttons and then use the button to eliminate the highlighted files.

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