# DECLARING Manifest files
    # web application manifest file doesn't have its own unique extension,
    # you can set its media type either by the filename (this can be problematic
    # as you will need to ensure that you don't have any other file with the
    # same name as the one you gave to your web application manifest file)
    # e.g.:

    .................
    <Files "manifest.json">
       AddType application/manifest+json               json
    </Files>

    AddType application/x-web-app-manifest+json         webapp
    AddType text/cache-manifest                         appcache
    .................




  # CACHING Manifest files
    ...............
    ExpiresByType application/manifest+json "access plus 1 year"
    ExpiresByType application/x-web-app-manifest+json  "access plus 0 seconds"
    ExpiresByType text/cache-manifest      "access plus 0 seconds"
    ExpiresByType text/cache-manifest      "access plus 1 seconds"
    ExpiresByType text/x-cross-domain-policy "access plus 1 week"
    ...................