I second that emotion.  I inherited an entire ecommerce platform built around Yahoo Store&#x27;s proprietary RHTML language.  The only documentation was a single comment:<p>&quot;RHTML turing complete?&quot;<p>I never did find out the answer to that, because I only lasted one month at the job.  I&#x27;m sure it was a great learning exercise &#x2F; psychotic breakdown for the original author.