anchor.diff:       interactive and non-interactive interface with the Todd-Coxeter coset\
        enumeration functions of the ACE (Advanced Coset Enumerator) C program.",
   
  -  PackageWWWHome := "http://school.maths.uwa.edu.au/~gregg/ACE/",
  -                  
   ##  On the GAP Website there is an online version of all manuals in the
   ##  GAP distribution. To handle the documentation of a package it is
   ##  necessary to have:
  
positive.code:     BookName  := "ACE",
      # format/extension can be one of .zoo, .tar.gz, .tar.bz2, -win.zip
      Archive   := 
        "http://school.maths.uwa.edu.au/~gregg/ACE/ace-5.1.tar.gz",
      ArchiveURLSubset 
                := ["doc", "htm"],
      HTMLStart := "htm/chapters.htm",
  
negative.code: ##  and updating of the package in the GAP distribution.
  ##  
  
    SourceRepository := rec(
      Type := "git",
      URL := Concatenation( "https://github.com/gap-packages/", ~.PackageName ),
    ),
    IssueTrackerURL := Concatenation( ~.SourceRepository.URL, "/issues" ),
    PackageWWWHome  := Concatenation( "https://gap-packages.github.io/", 
                                      ~.PackageName ),
    README_URL      := Concatenation( ~.PackageWWWHome, "/README" ),
    PackageInfoURL  := Concatenation( ~.PackageWWWHome, "/PackageInfo.g" ),
    ArchiveURL      := Concatenation( ~.SourceRepository.URL,
                                      "/releases/download/v", ~.Version,
                                      "/", ~.PackageName ,"-", ~.Version ),
  
  ##  Here you  must provide a short abstract explaining the package content 
  ##  in HTML format (used on the package overview Web page) and an URL 
  