diff --git a/samples/sample-01/README.adoc b/samples/sample-01/README.adoc
index 25465aa536..ef05462ff1 100644
--- a/samples/sample-01/README.adoc
+++ b/samples/sample-01/README.adoc
@@ -18,11 +18,17 @@ The consumer is configured with a `SeekToCurrentErrorHandler` which replays fail
 
 A second `@KafkaListener` consumes the raw JSON from the message.
 
-`2018-11-05 10:12:32.552  INFO 41635 --- [ fooGroup-0-C-1] com.example.Application                  : Received: Foo2 [foo=fail]`
-`2018-11-05 10:12:32.561 ERROR 41635 --- [ fooGroup-0-C-1] essageListenerContainer$ListenerConsumer : Error handler threw an exception`
-`...`
-`2018-11-05 10:12:33.033  INFO 41635 --- [ fooGroup-0-C-1] com.example.Application                  : Received: Foo2 [foo=fail]`
-`2018-11-05 10:12:33.033 ERROR 41635 --- [ fooGroup-0-C-1] essageListenerContainer$ListenerConsumer : Error handler threw an exception`
-`...`
-`2018-11-05 10:12:33.537  INFO 41635 --- [ fooGroup-0-C-1] com.example.Application                  : Received: Foo2 [foo=fail]`
-`2018-11-05 10:12:43.359  INFO 41635 --- [ dltGroup-0-C-1] com.example.Application                  : Received from DLT: {"foo":"fail"}`
+Console:
+
+[source, bash]
+----
+
+2018-11-05 10:12:32.552  INFO 41635 --- [ fooGroup-0-C-1] com.example.Application                  : Received: Foo2 [foo=fail]
+2018-11-05 10:12:32.561 ERROR 41635 --- [ fooGroup-0-C-1] essageListenerContainer$ListenerConsumer : Error handler threw an exception
+...
+2018-11-05 10:12:33.033  INFO 41635 --- [ fooGroup-0-C-1] com.example.Application                  : Received: Foo2 [foo=fail]
+2018-11-05 10:12:33.033 ERROR 41635 --- [ fooGroup-0-C-1] essageListenerContainer$ListenerConsumer : Error handler threw an exception
+...
+2018-11-05 10:12:33.537  INFO 41635 --- [ fooGroup-0-C-1] com.example.Application                  : Received: Foo2 [foo=fail]
+2018-11-05 10:12:43.359  INFO 41635 --- [ dltGroup-0-C-1] com.example.Application                  : Received from DLT: {"foo":"fail"}
+----
\ No newline at end of file
diff --git a/samples/sample-03/README.adoc b/samples/sample-03/README.adoc
index 6fe63d6018..5e903978b3 100644
--- a/samples/sample-03/README.adoc
+++ b/samples/sample-03/README.adoc
@@ -9,8 +9,13 @@ Run the application and use curl to send some data:
 
 Console:
 
-`2018-11-05 11:50:29.244  INFO 60437 --- [fooGroup2-0-C-1] com.example.Application                  : Received: [Foo2 [foo=a], Foo2 [foo=b], Foo2 [foo=c], Foo2 [foo=d], Foo2 [foo=e]]`
-`2018-11-05 11:50:29.247  INFO 60437 --- [fooGroup2-0-C-1] com.example.Application                  : Messages sent, hit enter to commit tx`
+[source, bash]
+----
+2018-11-05 11:50:29.244  INFO 60437 --- [fooGroup2-0-C-1] com.example.Application                  : Received: [Foo2 [foo=a], Foo2 [foo=b], Foo2 [foo=c], Foo2 [foo=d], Foo2 [foo=e]]
+
+2018-11-05 11:50:29.247 INFO 60437 --- [fooGroup2-0-C-1] com.example.Application                  : Messages sent, hit enter to commit tx
+
+2018-11-05 11:50:33.045  INFO 60437 --- [fooGroup3-0-C-1] com.example.Application                  : Received: [A, B, C, D, E]
+----
 
-`2018-11-05 11:50:33.045  INFO 60437 --- [fooGroup3-0-C-1] com.example.Application                  : Received: [A, B, C, D, E]`
 
diff --git a/samples/sample-04/README.adoc b/samples/sample-04/README.adoc
index d812ce6f57..dca1a153d7 100644
--- a/samples/sample-04/README.adoc
+++ b/samples/sample-04/README.adoc
@@ -8,21 +8,24 @@ Run the application and use curl to send some data:
 
 `$ curl -X POST http://localhost:8080/send/fail; curl -X POST http://localhost:8080/send/good`
 
-
 Console:
 
-`2021-05-11 16:17:55.372  INFO 75520 --- [ fooGroup-0-C-1] com.example.Application : Received: fail from topic4 @ xx`
+[source, bash]
+----
+
+2021-05-11 16:17:55.372  INFO 75520 --- [ fooGroup-0-C-1] com.example.Application : Received: fail from topic4 @ xx
 
-`2021-05-11 16:17:55.399  INFO 75520 --- [ fooGroup-0-C-1] com.example.Application : Received: good from topic4 @ xx`
+2021-05-11 16:17:55.399  INFO 75520 --- [ fooGroup-0-C-1] com.example.Application : Received: good from topic4 @ xx
 
-`2021-05-11 16:17:57.384  INFO 75520 --- [etry-2000-0-C-1] com.example.Application : Received: fail from topic4-retry-2000 @ xx`
+2021-05-11 16:17:57.384  INFO 75520 --- [etry-2000-0-C-1] com.example.Application : Received: fail from topic4-retry-2000 @ xx
 
-`2021-05-11 16:18:01.390  INFO 75520 --- [etry-4000-0-C-1] com.example.Application : Received: fail from topic4-retry-4000 @ xx`
+2021-05-11 16:18:01.390  INFO 75520 --- [etry-4000-0-C-1] com.example.Application : Received: fail from topic4-retry-4000 @ xx
 
-`2021-05-11 16:18:09.399  INFO 75520 --- [etry-8000-0-C-1] com.example.Application : Received: fail from topic4-retry-8000 @ xx`
+2021-05-11 16:18:09.399  INFO 75520 --- [etry-8000-0-C-1] com.example.Application : Received: fail from topic4-retry-8000 @ xx
 
-`2021-05-11 16:18:19.407  INFO 75520 --- [try-10000-0-C-1] com.example.Application : Received: fail from topic4-retry-10000 @ xx`
+2021-05-11 16:18:19.407  INFO 75520 --- [try-10000-0-C-1] com.example.Application : Received: fail from topic4-retry-10000 @ xx
 
-`2021-05-11 16:18:19.918  INFO 75520 --- [Group-dlt-0-C-1] com.example.Application : DLT Received: fail from topic4-dlt @ xx`
+2021-05-11 16:18:19.918  INFO 75520 --- [Group-dlt-0-C-1] com.example.Application : DLT Received: fail from topic4-dlt @ xx
+----
 
 As you can see the "good" record is processed while the failed record is retried by the series of retry topics.