How to edit files in folders without suffering misfortune from making mistakes..

Tip for when editing large folders and files..

First make a copy of the folder on the desktop as a backup to recover from in case you make a mistake deleting or editing...
Make an empty desktop folder labelled: 'To be deleted'.. Drag the files to be deleted into the folder labelled 'To be deleted'...

Don't edit from the desktop back-up, leave it alone.. Edit from the original folder only.. Leave the back-up alone till you've finish the editing, and are satisfied that you've not made any mistakes, and that it's OK to delete it.. Then run the two Bleachbits, and reboot to clear the RAM..