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    <h1><a href="/"><img class="srfi-logo" src="srfi-logo.svg" alt="SRFI logo" /></a>About Scheme Requests for Implementation</h1>

    <figure id="cumulative-srfis">
      <span><a href="#">×</a></span>
      <a href="#cumulative-srfis">
	<img alt="total SRFIs over time" src="srfi.svg" /></a>
	<figcaption>total SRFIs</figcaption></figure>

    <p>
      <a href="srfi-history.html">Since 1998</a>, the Scheme Requests
      for Implementation (SRFI) process has been helping Scheme users
      write portable, useful Scheme code.  We write concrete, detailed
      proposals and sample implementations for libraries and other
      additions to the Scheme language, and we encourage Scheme
      implementors to adopt them.</p>

    <p>
      If you're interested in reading existing proposals, writing a
      new one (<a href="srfi-template.html">template</a>), providing
      feedback on a draft proposal, helping with a sample
      implementation, or reporting a bug, please read about <a
      href="srfi-process.html">our process</a>, skim our <a
      href="srfi-faq.html">FAQ</a>, and subscribe to some of our
      <a href="srfi-list-subscribe.html">mailing lists</a>, including
      <a href="https://srfi-email.schemers.org/srfi-announce">srfi-announce</a> and
      <a href="https://srfi-email.schemers.org/srfi-discuss">srfi-discuss</a>.</p>

    <p>
      In addition to mailing lists about SRFIs, we host the Scheme
      Topics mailing lists, which are for discussing specific subjects
      that we hope may lead to SRFIs and other cooperative work, but
      which are currently not ready for specific proposals through the
      SRFI process.  So far, we have these lists:
      <a href="https://srfi-email.schemers.org/schemecomm"><code>schemecomm</code></a>,
      <a href="https://srfi-email.schemers.org/schemedoc"><code>schemedoc</code></a>,
      <a href="https://srfi-email.schemers.org/schemeorg"><code>schemeorg</code></a>,
      <a href="https://srfi-email.schemers.org/schemepersist"><code>schemepersist</code></a>,
      <a href="https://srfi-email.schemers.org/schemeregistry"><code>schemeregistry</code></a>,
      <a href="https://srfi-email.schemers.org/schemetest"><code>schemetest</code></a>,
      and <a href="https://srfi-email.schemers.org/schemeweb"><code>schemeweb</code></a>.</p>

    <p>
      Everyone is welcome to join our discussions.  Please
      <a href="srfi-list-subscribe.html">subscribe here</a>.  (You
      must subscribe in order to post messages.)</p>

    <p>Every SRFI is hosted on Github, but if you'd like a complete
      archive of all SRFI documents and code, please download <a
href="srfi.tgz"><code>srfi.tgz</code></a>.</p>

    <h2>History</h2>

    <p>
      The SRFI process  has been important to the development of
      some of the official Scheme standards, including <a
      href="http://www.r6rs.org/">R<sup>6</sup>RS</a> and <a
      href="http://r7rs.org">R<sup>7</sup>RS</a>.  It has been
      running <a href="srfi-history.html">since 1998</a>, and there
      have been many <a href="srfi-editors.html">different editors</a>.</p>

    <p>
      At the <a href="http://www.schemeworkshop.org/2018/">2018 Scheme
      Workshop</a>, SRFI editor Arthur A. Gleckler gave a talk
      entitled Growing Schemes: Twenty Years of Scheme Requests for
      Implementation (<a href="https://www.youtube.com/watch?v=YuqZKHwUygU">YouTube</a>,
      <a href="https://www.brinckerhoff.org/scheme2018/papers/Gleckler.pdf">PDF</a>)
      on SRFI, its history, and future plans.  At
      the <a href="https://icfp22.sigplan.org/home/scheme-2022#program">2022
      Scheme Workshop</a>, he gave a follow-up talk entitled Scheme Requests for Implementation Status Report
      (<a href="https://www.youtube.com/watch?v=xzZfdPtHvOk">YouTube</a>).</p>

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