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    <font face="Courier New">Dear all,<br>
      <br>
      I've found in a tutorial
      (<a class="moz-txt-link-freetext" href="http://ryanrossi.com/teaching/search/papers/scilabguide.pdf">http://ryanrossi.com/teaching/search/papers/scilabguide.pdf</a>)
      reference to some symbolic functions such as addf or trianfml, and
      even official Scilab help pages seemingly for an earlier version
      (<a class="moz-txt-link-freetext" href="https://help.scilab.org/docs/5.5.2/en_US/trianfml.html">https://help.scilab.org/docs/5.5.2/en_US/trianfml.html</a>), but they
      have been removed from version 6. Any idea why?<br>
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      Regards,<br>
      <br>
      Federico Miyara<br>
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