docs: add more features

docs/epilog.rst

@@ -4,8 +4,10 @@
    patterns.
 
 .. _Container: https://en.wikipedia.org/wiki/Container_(virtualization)
+.. _LZ4: https://en.wikipedia.org/wiki/LZ4_(compression_algorithm)
 .. _Proxmox Virtual Environment: https://www.proxmox.com/proxmox-ve
 .. _reStructuredText: https://www.sphinx-doc.org/en/master/usage/restructuredtext/index.html
 .. _Rust: https://www.rust-lang.org/
+.. _SHA-256: https://en.wikipedia.org/wiki/SHA-2
 .. _Sphinx: https://www.sphinx-doc.org
 .. _Virtual machine: https://en.wikipedia.org/wiki/Virtual_machine

docs/introduction.rst

@@ -24,6 +24,9 @@ Features
    data. The deduplication layer removes that redundancy and makes
    inkremental backup small and space efficient.
 
+:Data Integrity: The built in `SHA-256`_ checksum algorithm assures the
+   accuray and consistency of your backups.
+
 :Remote Sync: It is possible to efficently synchronize data to remote
    sites. Only deltas containing new data are transfered.
 
@@ -32,6 +35,8 @@ Features
 
 :Open Source: No secrets. You have access to the whole source tree.
 
+:Compression: Ultra fast `LZ4`_ compression is able to compress
+   several gigabytes of data per second.
 
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