Multiline and nested ifs now possible

Advanced Software Engineering/Advanced Software Engineering/Verbs/VerbFactory.cs

@@ -252,6 +252,14 @@ namespace Advanced_Software_Engineering {
                         } else throw new Exception(command + " has an incorrect number of parameters");
                         break;
 
+                    //exit flow
+                    case "end":
+                        if (parameterLength == 0) {
+                            if (currentChunk == null) throw new Exception("Cannot end at chunk level 0"); //Todo, describe better
+                            verbChunks.Remove(currentChunk);
+                            return currentChunk;
+                        } else throw new Exception(command + " doesn't take parameters");
+
                     default:
                         throw new Exception("Unknown command or cannot parse");
                 }