title: Octave: How should I go about having global constants handy for any program?
body: <p>I would like to have a list of constants readily available to use in any script or function I write. For example, I have been defining constants like hbar (Planck's constant) at the start of any script that will be using it. </p>
  
  <p>Instead of that, should I: </p>
  
  <ol>
  <li>make a list of constants in a script and load that script every time
  I want to use it, </li>
  <li>or save constants in a workspace and load that,</li>
  <li>or is it possible for me to have global variables that will be there even when I close and reopen Octave,</li>
  <li>or something else?</li>
  </ol>