build missing HTML files for entries
Setup a simple topnav for missing HTML files for entries. Added `bin/gen-other-html.sh` to build entry HTML files from markdown other than README.md to index.html HTML files. Fixed duplicate link text in `2020/ferguson1/gameplay.md`. Improved `inc/md2html.cfg` to support building the missing HTML files for entries. Added `make gen_other_html` to top level Makefile. Added `make gen_other_html` to `make quick_www` and `make www`. Fixed inventory links for year level index.html files. Changed `bin/output-year-index.sh` VERSION from "1.0.1 2024-02-23" to "1.1 2024-02-27". Added missing lines in `manifest.numbers`. Update the affected `.entry.json` files. The manifest (in both `manifest.numbers` and the collection of manifests from of all entry `.entry.json` files) now match. Errors from `make verify_entry_files` will now abort both `make quick_www` and `make www` rules in the top level `Makefile`. Changed markdown files in manifest to have an _inventory_order_ of _2000000000_ so that the `index.html` file will usually appear at the start of the _Secondary files_ set for the "#inventory" section of an entry's `index.html` file. Changed compressed tar files (files that end in _.tar.bz2_) in manifest to have an _inventory_order_ of _100000_ so that these files will usually appear at the end of the _Primary files_ set for the "#inventory" section of an entry's `index.html` file. Added 'Jump to top` link above the _Primary files_ section. Changed `bin/output-index-inventory.sh` VERSION from "1.1.1 2024-02-23" to "1.2 2024-02-27". Updated HTML files to perform the above via `make www`.
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<!DOCTYPE html>
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<!-- START: two lines up starts content from: inc/top.default.html -->
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<!-- -->
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<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
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<!-- !!! DO NOT MODIFY THIS FILE - This file is generated by a tool !!! -->
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<!-- !!! DO NOT MODIFY THIS FILE - This file is generated by a tool !!! -->
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<!-- !!! DO NOT MODIFY THIS FILE - This file is generated by a tool !!! -->
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<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
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<!-- -->
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<!-- END: this line ends content from: inc/top.default.html -->
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<!-- -->
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<!-- The original markdown content was formed by the tool: bin/gen-other-html.sh -->
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<!-- The HTML was converted from markdown by the tool: bin/md2html.sh -->
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<!-- -->
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<!-- START: this line starts content from: inc/head.default.html -->
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<head>
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<link rel="stylesheet" href="../../ioccc.css">
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>The International Obfuscated C Code Contest</title>
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<meta name="description" content="how.md for 2012/tromp">
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<meta name="keywords" content="IOCCC, 2012/tromp, how.md">
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</head>
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<!-- END: this line ends content from: inc/head.default.html -->
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<!-- START: this line starts content from: inc/body.default.html -->
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<body>
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<!-- END: this line ends content from: inc/body.default.html -->
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<!-- START: this line starts content from: inc/header.default.html -->
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<div class="header">
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<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
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<h1>The International Obfuscated C Code Contest</h1>
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<h2>how.md for 2012/tromp</h2>
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</div>
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<!-- END: this line ends content from: inc/header.default.html -->
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<!-- START: this line starts content from: inc/topnav.up2index.html -->
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<div class="topnav">
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<a class="Left" href="index.html">↑ jump to index.html ↑</a>
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</div>
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<!-- END: this line ends content from: inc/topnav.up2index.html -->
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<!-- START: this line starts content from: inc/begin-row.default.html -->
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<div class="row">
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<!-- END: this line ends content from: inc/begin-row.default.html -->
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<!-- START: this line starts content from: inc/begin-leftcolumn.default.html -->
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<div class="leftcolumn">
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<!-- END: this line ends content from: inc/begin-leftcolumn.default.html -->
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<!-- START: this line starts content from: inc/sidenav.default.html -->
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<div class="sidenav">
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<a href="#content">Jump to contents</a>
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</div>
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<hr>
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<div class="sidenav">
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<a href="../../index.html">IOCCC Home</a>
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<a href="../../years.html">Winning Entries</a>
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<a href="../../authors.html">People who have won</a>
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</div>
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<hr>
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<div class="sidenav">
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<a href="../../news.html">IOCCC News</a>
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<a href="../../faq.html#submit">How to enter the IOCCC</a>
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<a href="../../faq.html">FAQ</a>
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</div>
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<hr>
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<div class="sidenav">
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<a href="../../bugs.html">Bugs & (mis)features</a>
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<a href="../../faq.html#fix_an_entry">Fixing IOCCC entries</a>
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<a href="../../faq.html#fix_web_site">Fixing the web site</a>
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<a href="../../faq.html#fix_author">Fixing author info</a>
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<a href="../../thanks-for-help.html">Thanks for the help</a>
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</div>
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<hr>
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<div class="sidenav">
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<a href="../../judges.html">The IOCCC Judges</a>
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<a href="../../contact.html">Contacting the IOCCC</a>
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</div>
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<hr>
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<div class="sidenav">
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<a href="#top">Jump to top</a>
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</div>
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<!-- END: this line ends content from: inc/sidenav.default.html -->
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<!-- START: this line starts content from: inc/end-leftcolumn.default.html -->
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</div>
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<!-- END: this line ends content from: inc/end-leftcolumn.default.html -->
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<!-- START: this line starts content from: inc/begin-rightcolumn.default.html -->
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<div class="rightcolumn">
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<!-- END: this line ends content from: inc/begin-rightcolumn.default.html -->
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<!-- START: this line starts content from: inc/before-content.default.html -->
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<a name="content"></a>
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<!-- END: this line ends content from: inc/before-content.default.html -->
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<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
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<h1 id="spoiler">Spoiler</h1>
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<p>The program implements a so called <a
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href="https://en.wikipedia.org/wiki/Krivine_machine">Krivine
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machine</a>, enhanced with a <a
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href="https://en.wikipedia.org/wiki/BIOS">basic input/output system</a>
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and a reference counting <a
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href="https://en.wikipedia.org/wiki/Waste_collector">garbage
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collector</a>. The Krivine machine is a stepwise transformer of a global
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state consisting of the current term, the current environment (a list of
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closures), and a stack of continuations (see the 3rd reference for
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details).</p>
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<p>The term space holds <a
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href="https://en.wikipedia.org/wiki/Lambda_calculus">lambda calculus</a>
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terms in the following format. 0 denotes some form of I/O; the only four
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occurrences are at:</p>
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<pre><code> C=13: recognizes end of a byte
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C=20: recognize output of 0 bit
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C=21: recognize output of 1 bit
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C=end: input list, expanded lazily</code></pre>
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<p><code>1</code> denotes a variable, with the next entry its <a
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href="https://en.wikipedia.org/wiki/De_Bruijn_index">de Bruijn
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index</a>.</p>
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<p><code>2</code> denotes application with the next entry the size of
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the term being applied.</p>
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<p><code>3</code> denotes lambda abstraction.</p>
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<p>A closure consists of the following items:</p>
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<ol start="0" type="1">
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<li>pointer to the next closure (as part of an environment), or next
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record on free list.</li>
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<li>reference count.</li>
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<li>pointer to environment.</li>
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<li>lambda term (index in term space).</li>
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</ol>
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<p>Here’s what each variable does:</p>
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<pre><code>L Lambda term space
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m mode: 0 for bits and 7 for bytes
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b bits remaining unread in I, -1 on EOF
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D Desirable temporary
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c continuation context
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a active environment pointer
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C Current term index
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U Ultimate term pointer
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u utility entry
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B Born to be free-list of closures
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I Input character
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O Output character
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e entry of current term</code></pre>
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<p>Here’s what each of the 6 auxiliary functions do:</p>
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<pre><code>s variable lookup in active environment with de Bruijn index u
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S gets one bit of input, setting b to -1 on EOF or to remaining number of bits in current byte
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k copy fragment from string literal holding lambda terms xor 46 into current end of term space
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x expand input, adding 11 (resp. 99) entries to term space for bit (resp. byte) mode
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p parses BLC-encoded lambda term using S(), stores results in term space and returns length
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d decrease reference counter, add record to free list on reaching zero</code></pre>
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<!-- END: this line ends content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
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<!-- START: this line starts content from: inc/after-content.default.html -->
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<!-- END: this line ends content from: inc/after-content.default.html -->
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<!-- START: this line starts content from: inc/end-rightcolumn.default.html -->
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</div>
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<!-- END: this line ends content from: inc/end-rightcolumn.default.html -->
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<!-- START: this line starts content from: inc/end-row.default.html -->
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</div>
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<!-- END: this line ends content from: inc/end-row.default.html -->
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<!-- START: this line starts content from: inc/footer.default.html -->
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<div class="footer">
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<hr>
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<h2>Coda</h2>
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<p><a href="https://validator.w3.org/nu/?doc=#">Nu HTML check this web page</a></p>
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<p><a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a></p>
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</div>
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<!-- END: this line ends content from: inc/footer.default.html -->
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<!-- START: this line starts content from: inc/bottom.default.html -->
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</body>
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</html>
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<!-- END: this line ends content from: inc/bottom.default.html -->
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Block a user