RPL ("Reverse Polish _(LISP)") is the *(programming language) from HP 28/48
calculators, a mix of _(Forth) and _(Lisp).
Despite their lack of horsepower, these calculators are much more usable
and friendly than my _(Unix) workstation.

<ul class="links">
  <li>_("hpcalc.org - HP48 Software Archive"|http://www.hpcalc.org/).</li>
  <li>_("HP48 Programming Documentation Files"|http://www.hpcalc.org/hp48/docs/programming/).</li>
  <li>_("cRPL"|http://sourceforge.net/projects/crpl/) on _(SourceForge).</li>
</ul>