From 5c4711b4546fc2a6e679cb68dc75b2d64f6996af Mon Sep 17 00:00:00 2001
From: Martin Czygan <martin.czygan@gmail.com>
Date: Thu, 5 Nov 2020 17:22:46 +0100
Subject: update README

---
 README.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/README.md b/README.md
index fec6dd0..805d1d9 100644
--- a/README.md
+++ b/README.md
@@ -51,3 +51,27 @@ $ cat data/sample.json | parallel -j 8 --pipe --roundrobin python -m fuzzycat.ma
 
 Interestingly, the parallel variants detects fewer clusters (because data is
 split and clusters are searched within each batch).
+
+
+## Cluster
+
+```shell
+usage: fuzzycat command [options] cluster [-h] [--prefix PREFIX]
+                                          [--tmpdir TMPDIR] [-P] [-f FILES]
+                                          [-t TYPE]
+                                          {cluster,verify} ...
+
+positional arguments:
+  {cluster,verify}
+    cluster             group entities
+    verify              verify groups
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --prefix PREFIX       temp file prefix
+  --tmpdir TMPDIR       temporary directory
+  -P, --profile         profile program
+  -f FILES, --files FILES
+                        output files
+  -t TYPE, --type TYPE  cluster algorithm: title, tnorm, tnysi
+```
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