The Jargon File (version 4.4.7, 29 Dec 2003):

zero-content
 adj.

    Syn. content-free.


The Free On-line Dictionary of Computing (30 December 2018):

content-free
zero-content

    1. (By analogy with "context-free") Used of a message
   that adds nothing to the recipient's knowledge.  Though this
   adjective is sometimes applied to flamage, it more usually
   connotes derision for communication styles that exalt form over
   substance or are centred on concerns irrelevant to the subject
   ostensibly at hand.  Perhaps most used with reference to speeches
   by company presidents and other professional manipulators.

   See also four-colour glossies.

    2. Within British schools the term refers to
   general-purpose software such as a word processor, a
   spreadsheet or a program that tests spelling of words supplied
   by the teacher.  This is in contrast to software designed to teach
   a particular topic, e.g. a plant growth simulation, an interactive
   periodic table or a program that tests spelling of a predetermined
   list of words.  Content-free software can be more cost-effective
   as it can be reused for many lessons throughout the syllabus.

   [Jargon File]

   (2014-10-30)