Out-of-box offline @url{https://en.wikipedia.org/wiki/Sneakernet,
sneakernet/floppynet}, @url{https://en.wikipedia.org/wiki/Dead_drop,
-dead drops} and @url{https://en.wikipedia.org/wiki/Air_gap_(networking),
-air-gapped} computers support. But online TCP daemon with full-duplex
-resumable data transmission exists.
+dead drops}, sequential and append-only
+@url{https://en.wikipedia.org/wiki/CD-ROM,
+CD-ROM}/@url{https://en.wikipedia.org/wiki/Tape_drive, tape} storages,
+@url{https://en.wikipedia.org/wiki/Air_gap_(networking), air-gapped}
+computers support. But online TCP daemon with full-duplex resumable data
+transmission exists.
Look for possible @ref{Use cases, use cases}!
@url{https://www.gnu.org/philosophy/free-sw.html, free software}
licenced under @url{https://www.gnu.org/licenses/gpl-3.0.html, GNU GPLv3+}.
It should work on all @url{https://en.wikipedia.org/wiki/POSIX,
-POSIX}-compatible systems. Easy integration with existing
+POSIX}-compatible systems. Easy @ref{Integration, integration} with existing
@url{https://en.wikipedia.org/wiki/SMTP, SMTP} servers. Single
@url{http://yaml.org/, YAML} configuration file.