title: Importing variables from another file?
body: <p>How can I import variables from one file to another?</p>
  
  <p>example: <code>file1</code> has the variables <code>x1</code> and <code>x2</code> how to pass them to <code>file2</code>?</p>
  
  <p>How can I import <strong>all</strong> of the variables from one to another?</p>