How to modify or delete files
Right-click on the name of the file or folder.
If you would like to delete the file, click on "Delete" and answer with "yes" to the confirmation question.
If you would like to modify the file, click on "Modify" button and change the properties of the file.
You can use the "Change file" option if you want to change only the file, not its meta-data. Here you can browse a new version of the file and upload it.