title: Open and run a .m in matlab into an another .m file (from another directory)
body: <p>I have a question about a code I am creating. </p>
  
  <p>I have a code in a .m file, let's name it as "first.m". </p>
  
  <p>But in the "first.m" i would like to write a command in this script in which I would like to run and execute an another .m file, let's name it "second.m" file, which is in a different directory.</p>
  
  <p>I mean I would like to use a subroutine, but the main problem is that I do not have understand how can I use subroutines in MATLAB.</p>
  
  <p>Could anyone help me to make it?</p>