title: A sample UML Activity Diagram
body: <p>I have drawn the following diagram and I want to know how correct is that?</p>
  
  <p>This is a sample CLI program which receives a command, checks if it is correct[or exists in command definition file] (its parser), and then executes it, else it will throw an error to the user. On the course of execution, if anything happens that would terminate the execution, is reported as a failure to the user. All of these events must be logged, too. My concern is the horizontal bars (known as merge-fork):</p>
  
  <p><img src="https://i.stack.imgur.com/5UxkZ.jpg" alt="enter image description here"></p>