diff --git a/docs/30_Usage.md b/docs/30_Usage.md
index efccbe3bed6f3b6aa856047bc8b9a7a16d31e623..efadb8770c1b6efdb066e0fa00788d5dfbce55bc 100644
--- a/docs/30_Usage.md
+++ b/docs/30_Usage.md
@@ -47,23 +47,6 @@ The infomation for the checks is structured in sections.
 First an example:
 
 ```ini
-; =======================================================================
-;
-; APPMONITOR CLI CLIENT
-;
-; to understand the entries of metadata see JSON in 
-; <https://os-docs.iml.unibe.ch/appmonitor/Client/Description_of_response.html>
-;
-; for the checks see its parameters
-; <https://os-docs.iml.unibe.ch/appmonitor/PHP_client/Plugins/Checks/index.html>
-;
-; =======================================================================
-
-
-; -----------------------------------------------------------------------
-; METADATA
-; -----------------------------------------------------------------------
-
 [meta]
 host = "www.example.com"
 website = "Company website"
@@ -76,24 +59,14 @@ email[]="webmaster@example.com"
 
 slack["#support-channel"]="https://hooks.slack.com/services/XXXXXX/YYYYYY/ZZZZZ"
 
-
 ; -----------------------------------------------------------------------
 ; CHECKS
 ; -----------------------------------------------------------------------
 
 ["hello plugin"]
-description="I sust wann say hello"
+description="I sust wanna say hello"
 function="hello"
-
-; JSON example ... variables cannot be expanded
-; params='{
-;     "message": "Here I am"
-; }'
-;
-; ... but in double quotes the expansion works
 params[message]="Here is ${USER}"
-
-; -----------------------------------------------------------------------
 ```
 
 #### Types of values
diff --git a/docs/40_Embed.md b/docs/40_Embed.md
index 669ee6eae0a1fac0181032b9d662d4853ecc0b94..32786b94b049a9da692b239a1417ed8e3e966d42 100644
--- a/docs/40_Embed.md
+++ b/docs/40_Embed.md
@@ -15,18 +15,35 @@ This code snippet is for demonstration purposes only. A PHP web app should use t
 ```php
 <?php
 
-$AMCLI=__DIR__.'/../built_packages/amcli';
-$INI=__DIR__.'/../src/simple.ini';
+$AMCLI = __DIR__ . '/../built_packages/amcli';
+$INI = __DIR__ . '/../src/simple.ini';
 
-$sCommand="$AMCLI --ini='$INI'";
-$aOut=[];
+$sCommand = "$AMCLI --ini='$INI'";
+$aOut = [];
 
 exec($sCommand, $aOut, $iRc);
 
-if($iRc==0){
+if ($iRc == 0) {
     header('Content-type: application/json');
-}else{
-    echo "Error: occured...\n";
+} else {
+    header("HTTP/1.1 503 Service unavailable");
+    echo "<h1>503 Service unavailable</h1>\n";
 }
 echo implode("\n", $aOut);
 ```
+
+To test it:
+
+(1)
+
+Start PHP webserver
+
+```txt
+$ cd examples
+$ php -S localhost:9000
+[Fri Mar  7 09:01:52 2025] PHP 8.4.4 Development Server (http://localhost:9000) started
+```
+
+(2)
+
+In a webbrowser open <http://localhost:9000/embed_example.php>