From 92a674b089223375f1ba260d93817441ce958370 Mon Sep 17 00:00:00 2001
From: yuri1969 <1969yuri1969@gmail.com>
Date: Wed, 26 Feb 2025 18:33:34 +0100
Subject: [PATCH] describe UNA handling

The UNA segment definition might not be obvious.
---
 README.md | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 4da5259..0e0acf3 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,13 @@ interchange.add_segment(Segment("QTY", ["12", "3"]))
 print(interchange.serialize())
 ```
 
-You may also want to parse a « raw » segment bunch which is not an interchange :
+To include or override the Service String Advice segment (`UNA`), just specify it as a regular segment:
+
+```python
+interchange.add_segment(Segment("UNA", ":+.? '"))
+```
+
+You may also want to parse a « raw » segment bunch which is not an interchange:
 
 ```python
 from pydifact.segmentcollection import RawSegmentCollection
@@ -110,13 +116,13 @@ In python ecosystem:
 - [bots](https://github.com/bots-edi/bots) - huge, with webinterface (bots-monitor), webserver, bots-engine.
 - [edicat](https://github.com/notpeter/edicat) - simple, only for separating lines/segments for CLI-piping.
 
-
 ## Development
 
 ### Setup
+
 To develop pydifact, clone the repository and install the dev requirements:
 
-```
+```bash
 make dev
 # or 
 # pip install -e .[dev]