@code{mtime} (for @code{If-Modified-Since} header generation),
@code{ETag} and response headers for debugging.
-@item feed
-It contains the content itself.
-
-@item feed.download
-Used as intermediate target for the @command{redo} build system and
-contains SHA-512 hash of the @file{feed} file. It is used to nearly
-completely skip file copying/moving on filesystem if feed was not
-modified.
+@item feed.zst
+It contains the content itself. Compressed with
+@url{https://facebook.github.io/zstd/, Zstandard}.
+
+@item download.hash, parse.hash
+SHA-512 hash of the @file{feed.zst}, used to determine if feed was
+updated and parser has to do the job.
@item title
Automatically generated file with the title of the feed.