[Tutor] New features(sorry lost the original subject!)

[Alan G]

   On 25 Oct 2019 20:37, boB Stepp <robertvstepp at gmail.com> wrote:

      Are there any examples of language behaviors making it into the
     documentation only to be altered or deprecated a version or two later?

   Generally new features that have any doubts about their future are
   described as experimental and carry the caveat that they may change or
   even be dropped in future versions. 
   Alan G