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<p>and <a href="page.php?w=Agora_%28programming_language%29">Agora</a>. The IBM Tivoli Framework's distributed object system, developed in 1990, was, at the lowest level, a prototype-based object system inspired by Self.</p>

<p><big> Prototype-based programming languages </big></p>
<p>Traditional class-based OO languages are based on a deep-rooted duality:<br/>
#<a href="page.php?w=Class_%28programming%29">Classes</a> define the basic qualities and behaviours of objects.<br/>
#<a href="page.php?w=Object_%28computer_science%29">Object instances</a> are particular</p><p>
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