File - Edit: File Properties.
  Description
    This view allows you to edit File properties.
  Form Elements
-     Title
- The optional title of the File.
-     Content type
- The content type of the file. Zope will try to
    guess an appropriate content type when you upload a File.
-     Precondition
- Allows you to specify a precondition for the
    File. A precondition is a method or document which is executed
    before the File is viewed or downloaded. If the precondition
    raises an exception then the File cannot be viewed.
-     File Content
- If the content of the file object is text-based
    and small enough to be edited with a Web form, a textarea
    containing the content of the file will be displayed. You can make
    changes to the content in this text area and click the Save
    Changesbutton to update the file content.
-     Last Modified
- The time that the object was last changed. This
    is only displayed if the file data is non-text or too large to be 
    edited with a Web form.
-     File Size
- The size (in bytes) of the image data. This is only
    displayed if the file data is not text or too large to be edited 
    with a Web form.
-     File Data
- The file to upload. Use the Browse...button to
    select a local file.
-     Upload
- Uploads the file.