NOTE: This feature is deprecated and should not be used in new installations.
The [help tag] element, in conjunction with the Help directive in the minivend.cfg file,
is similar to the buttonbar tag, except it displays help messages or
images, and is keyed by item name. The help can be contained in any of a
series of files defined in the Help directive. It can contain most MiniVend
elements. The user can turn off help through a form -- see the control.html file for an example.