title: How to use Critcl ByteArray?
body: <p>I want to try out Critcl to enhance memory performance using a <a href="https://en.wikipedia.org/wiki/Z-order_curve" rel="nofollow noreferrer">Z-order curve</a> for a 2d-grid. What I need from Critcl is allocation, setter, getter and some size info. <a href="https://andreas-kupries.github.io/critcl/doc/files/critcl_cproc.html" rel="nofollow noreferrer">Reading about the Critcl ByteArray</a> and <a href="https://github.com/andreas-kupries/critcl/tree/master/examples" rel="nofollow noreferrer">examples</a> does not make me confident on how to do it.</p>
  
  <p>How do I create and return a ByteArray (i.e. Z-order curve)? </p>
  
  <p>Any caveats I should know about when using ByteArray?</p>