formatted nav patterns 2 to 4

content/NAVPatterns/3-cal-coding-guidelines/readability/case-actions/index.md

@@ -2,16 +2,22 @@
 title = "CASE Action"
 weight = 310
 +++
-A CASE action should start on a line after the possibility. Bad code
+A CASE action should start on a line after the possibility.
 
-    CASE Letter OF
+Bad code
+
+```al
+CASE Letter OF
     'A': Letter2 := '10';
     'B': Letter2 := '11';
+```
 
 Good code
 
-    CASE Letter OF
+```al
+CASE Letter OF
     'A':
-    Letter2 := '10';
+        Letter2 := '10';
     'B':
-    Letter2 := '11';
+        Letter2 := '11';
+```