title: What does regular expression [A-Z]{2,3}\\d+ mean
body: <p>What does the regex <code>[A-Z]{0,2,3}\\d+</code> mean?</p>
  
  <p>Does it match strings like</p>
  
  <p><code>AAA1234</code> 
  <code>0000123</code>
  <code>AA12345</code></p>
  
  <p>Thanks</p>