When loading files, file folders are shown with a yellow background, as shown below.

When you tap on a folder, the files in that folder are shown, and the name of the folder replaces the "Tuning Files" heading shown here. You can go back to the previous folder by tapping on the button in the upper left ("Tuning" here, because the root of the file system is being displayed). In case you want to exit all the way from the file explorer without backing up one folder at a time, tap on the Exit button in the lower left.

The button in the bottom right let you search for files by typing a few letters of the file name. Only those files that qualify are shown. This is useful if you have a large number of files. You can choose to search for file names containing the letters you enter or file names that start with the letters you enter.

Tap here to find out how to use cloud file storage for your tuning files.

To delete any tuning file or empty folder, swipe from right to left across the name of the item to be deleted.  You cannot delete a folder unless you first delete all the files in that folder.

To move or rename any tuning file touch and hold for two seconds on the name you want to change or move, until the Rename/Move prompt appears, as shown on the left. With this prompt you can enter a new name to rename the original file. If you Cancel, you will see this prompt on the right, where you can either Cancel back to the main tuning screen, or choose a different folder as the destination for moving the tuning file.