The official VM procedure (GET +  PUT) works under other systems as well.
You can also  delete/edit the file, then delete the  DBINDEX file, and it
will  work  to  the  same  extent  as  it  did  on  VM  (and  is  equally
unsupported). This  messes with  the web archive  interface, so  you then
need to do the equivalent of  deleting the DBINDEX: remove all the INDxxx
files  in  the  web  archive  subdirectory for  the  list,  then  restart
LISTSERV.

  Eric