com presentations: mx talk: mx14.html mx14.xml slides/intro/capi.xml slides/intro/phpannounce.xml
[email protected] (Rasmus Lerdorf)
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|---|---|
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Commit: 4d3c1016c652b3f0668a8247ffb09614d4c69d48 Author: Rasmus Lerdorf <[email protected]> Tue, 23 Sep 2014 21:14:30 -0700 Parents: 8407131ac798a2b6cf4d9e273285aaeda832fb4a Branches: master Link: http://git.php.net/?p=presentations.git;a=commitdiff;h=4d3c1016c652b3f0668a8247ffb09614d4c69d48 Log: mx talk Changed paths: A mx14.html A mx14.xml A slides/intro/capi.xml A slides/intro/phpannounce.xml
diff_4d3c1016c652b3f0668a8247ffb09614d4c69d48.txt
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diff --git a/mx14.html b/mx14.html
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+<!doctype html>
+<html lang="en">
+
+ <head>
+ <meta charset="utf-8">
+
+ <title>Coding and Dreaming</title>
+
+ <meta name="description" content="Coding and Dreaming">
+ <meta name="author" content="Rasmus Lerdorf">
+
+ <meta name="apple-mobile-web-app-capable" content="yes" />
+ <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
+
+ <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
+
+ <link rel="stylesheet" href="/reveal.js/css/reveal.min.css">
+ <link rel="stylesheet" href="/samdark.css" id="theme">
+
+ <!-- For syntax highlighting -->
+ <link rel="stylesheet" href="/styles/github.css">
+
+ <!-- If the query includes 'print-pdf', include the PDF print sheet -->
+ <script>
+ if( window.location.search.match( /print-pdf/gi ) ) {
+ var link = document.createElement( 'link' );
+ link.rel = 'stylesheet';
+ link.type = 'text/css';
+ link.href = '/reveal.js/css/print/pdf.css';
+ document.getElementsByTagName( 'head' )[0].appendChild( link );
+ }
+ </script>
+
+ <!--[if lt IE 9]>
+ <script src="lib/js/html5shiv.js"></script>
+ <![endif]-->
+ </head>
+
+ <body>
+
+ <div class="reveal">
+
+ <!-- Any section element inside of this container is displayed as a slide -->
+ <div class="slides">
+ <section>
+ <h1>Coding and Dreaming</h1>
+ <h3>PHPConMX</h3>
+ <h3>Mexico City</h3>
+ <h3>Sept. 26, 2014</h3>
+ <a href="http://talks.php.net/mx14">http://talks.php.net/mx14</a><br><br>
+ <p>Rasmus Lerdorf<br>
+ <small><a href="http://twitter.com/@rasmus">@rasmus</a></small>
+ </p>
+ </section>
+ <section>
+ <h2 margin-bottom="2em">1993</h2><br>
+ <pre><code>#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+#define ishex(x) (((x) >= '0' && (x) <= '9') || ((x) >= 'a' && \
+ (x) <= 'f') || ((x) >= 'A' && (x) <= 'F'))
+
+int htoi(char *s) {
+ int value;
+ char c;
+
+ c = s[0];
+ if(isupper(c)) c = tolower(c);
+ value=(c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10) * 16;
+
+ c = s[1];
+ if(isupper(c)) c = tolower(c);
+ value += c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10;
+
+ return(value);
+}
+
+void main(int argc, char *argv[]) {
+ char *params, *data, *dest, *s, *tmp;
+ char *name, *age;
+
+ puts("Content-type: text/html\r\n");
+ puts("<HTML><HEAD><TITLE>Form Example</TITLE></HEAD>");
+ puts("<BODY><H1>My Example Form</H1>");
+ puts("<FORM action=\"form.cgi\" method=\"GET\">");
+ puts("Name: <INPUT type=\"text\" name=\"name\">");
+ puts("Age: <INPUT type=\"text\" name=\"age\">");
+ puts("<BR><INPUT type=\"submit\">");
+ puts("</FORM>");
+
+ data = getenv("QUERY_STRING");
+ if(data && *data) {
+ params = data; dest = data;
+ while(*data) {
+ if(*data=='+') *dest=' ';
+ else if(*data == '%' && ishex(*(data+1))&&ishex(*(data+2))) {
+ *dest = (char) htoi(data + 1);
+ data+=2;
+ } else *dest = *data;
+ data++;
+ dest++;
+ }
+ *dest = '\0';
+ s = strtok(params,"&");
+ do {
+ tmp = strchr(s,'=');
+ if(tmp) {
+ *tmp = '\0';
+ if(!strcmp(s,"name")) name = tmp+1;
+ else if(!strcmp(s,"age")) age = tmp+1;
+ }
+ } while(s=strtok(NULL,"&"));
+
+ printf("Hi %s, you are %s years old\n",name,age);
+ }
+ puts("</BODY></HTML>");
+}
+</code></pre>
+ </section>
+ <section>
+ <h2 margin-bottom="2em">1993</h2><br>
+ <pre><code>use CGI qw(:standard);
+print header;
+print start_html('Form Example'),
+ h1('My Example Form'),
+ start_form,
+ "Name: ", textfield('name'),
+ p,
+ "Age: ", textfield('age'),
+ p,
+ submit,
+ end_form;
+if(param()) {
+ print "Hi ",em(param('name')),
+ "You are ",em(param('age')),
+ " years old";
+}
+print end_html;</code></pre>
+ </section>
+ <section>
+ <h2 margin-bottom="2em">1994</h2><br>
+ <pre><code><html><head><title>Form Example</title></head>
+<body><h1>My Example Form</h1>
+<form action="form.phtml" method="POST">
+Name: <input type="text" name="name">
+Age: <input type="text" name="age">
+<br><input type="submit">
+</form>
+<?if($name):?>
+Hi <?echo $name?>, you are <?echo $age?> years old
+<?endif?>
+</body></html></code></pre>
+ </section>
+ <section>
+ <h3 class="p">PHP Announcement June 8, 1995</h3>
+ <h4 class="p">Posted to comp.infosystems.www.authoring.cgi</h4>
+ <pre><code class="html">Subject: Announce: Personal Home Page Tools (PHP Tools)
+
+Announcing the Personal Home Page Tools (PHP Tools) version 1.0.
+These tools are a set of small tight cgi binaries written in C.
+They perform a number of functions including:
+
+. Logging accesses to your pages in your own private log files
+. Real-time viewing of log information
+. Providing a nice interface to this log information
+. Displaying last access information right on your pages
+. Full daily and total access counters
+. Banning access to users based on their domain
+. Password protecting pages based on users' domains
+. Tracking accesses ** based on users' e-mail addresses **
+. Tracking referring URL's - HTTP_REFERER support
+. Performing server-side includes without needing server support for it
+. Ability to not log accesses from certain domains (ie. your own)
+. Easily create and display forms
+. Ability to use form information in following documents
+
+Here is what you don't need to use these tools:
+
+. You do not need root access - install in your ~/public_html dir
+. You do not need server-side includes enabled in your server
+. You do not need access to Perl or Tcl or any other script interpreter
+. You do not need access to the httpd log files
+
+The only requirement for these tools to work is that you have
+the ability to execute your own cgi programs. Ask your system
+administrator if you are not sure what this means.
+
+The tools also allow you to implement a guestbook or any other
+form that needs to write information and display it to users
+later in about 2 minutes.
+
+The tools are in the public domain distributed under the GNU
+Public License. Yes, that means they are free!
+
+For a complete demonstration of these tools, point your browser
+at: http://www.io.org/~rasmus
+
+--
+Rasmus Lerdorf
[email protected]
+http://www.io.org/~rasmus</code></pre>
+ </section>
+ <section>
+ <h2>C API for the Web</h2>
+ </section>
+ <section>
+ <h3 class="p">Focus on the Ecosystem</h3>
+ <ul>
+ <li>LAMP wasn't an accident</li>
+ <li>Robustness, Performance and Security</li>
+ <li><font color="ff2233">♥</font> shared hosting ISPs</li>
+ </ul>
+ <h3 class="p">Scale</h3>
+ <ul>
+ <li>Scaling up is expected</li>
+ <li>Scaling down is surprisingly hard</li>
+ <li>Doing both is rocket science</li>
+ </ul>
+ </section>
+ <section>
+ <h3 class="p">Performance</h3>
+ <ul>
+ <li>mod_php</li>
+ <li>shared-nothing perfect sandbox model</li>
+ </ul>
+ <h3 class="p">Robustness</h3>
+ <ul>
+ <li>SQL LIMIT clause</li>
+ <li>Promote Prefork shared-nothing model</li>
+ </ul>
+ <h3 class="p">Security</h3>
+ <ul>
+ <li>max_execution_time</li>
+ <li>memory_limit</li>
+ <li>safe mode</li>
+ </ul>
+ </section>
+ <section>
+ <h3 class="p">What was he thinking?</h3>
+ <ul>
+ <li>Case insensitive function names?</li>
+ <li>Naming inconsistencies?</li>
+ <li>What's with the $ signs?</li>
+ <li>Globals?</li>
+ <li>register_globals?</li>
+ <li>magic_quotes?</li>
+ </ul>
+ <h3 class="p">OMGWTFBBQ?</h3>
+ <pre><code>array_search($needle, $haystack);
+strstr($haystack, $needle);
+in_array($needle, $haystack);
+substr_count($haystack, $needle);
+array_key_exists($needle, $haystack);
+strchr($haystack, $needle);</code></pre>
+ </section>
+ <section>
+ <h2>2014</h2>
+ </section>
+ <section>
+ <section id="performance">
+ <h2 margin-bottom="2em">PHP 5.5</h2><br>
+ <h3 class="p">Performance Improvements</h3>
+ <ul>
+ <li>Nested calls</li>
+ <li>Call stack pre-allocated by compiler</li>
+ <li>Bundled opcode cache</li>
+ </ul>
+ </section>
+<section id="generators">
+ <h4 class="p">✔ Generators</h4>
+ <pre><code>function xrange($start, $end) {
+ for ($i = $start; $i <= $end; $i ++) {
+ yield $i;
+ }
+}
+foreach (xrange(0, 5) as $i) {
+ echo $i, "\n";
+}</code></pre>
+ </section>
+<section id="coroutines">
+ <h4 class="p">✔ Coroutines</h4>
+ <pre><code>function logger($fileName) {
+ $fileHandle = fopen($fileName, 'a');
+ while (true) {
+ fwrite($fileHandle, yield . "\n");
+ }
+}
+
+$logger = logger(__DIR__ . '/log');
+$logger->send('Foo');
+$logger->send('Bar');</code></pre>
+ <p class="p">For an advanced explanation of coroutines, read this article by Nikita Popov</p>
+ <div align="" style="font-size: ; color: ; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="http://nikic.github.io/2012/12/22/Cooperative-multitasking-using-coroutines-in-PHP.html" target="">Cooperative multitasking using coroutines</a></div><br />
+ </section>
+<section id="finally">
+ <h4 class="p">✔ finally</h4>
+ <pre><code>$db = mysqli_connect();
+try {
+ call_some_function($db);
+} finally {
+ mysqli_close($db);
+}</code></pre>
+ </section>
+<section id="foreachlist">
+ <h4 class="p">✔ list() in foreach</h4>
+ <pre><code>$names = [ ['John','Smith'], ['Fred','Johnson'] ];
+foreach($names as list($first,$last)) {
+ echo $first,$last;
+}</code></pre>
+ </section>
+<section id="constarray">
+ <h4 class="p">✔ Const array/string Dereferencing</h4>
+ <pre><code>echo array(1, 2, 3)[0]; //output 1
+echo "foobar"[3]; //output b
+echo [1,3,4][2]; //output 4</code></pre>
+ </section>
+<section id="others">
+ <h4 class="p">✔ empty() support for functions/expressions</h4>
+ <h4 class="p">✔ curl upload functionality rewritten</h4>
+ <h4 class="p">✔ Simplified password hashing API</h4>
+ <pre><code>// Hash
+$hash = password_hash("super secret",PASSWORD_BCRYPT);
+
+// To validate $pwd against the stored hash
+if (password_verify($pwd, $hash)) {
+ echo 'Password is valid!';
+} else {
+ echo 'Invalid password.';
+}</code></pre>
+ </section>
+<section id="php55_done">
+ <div align="" style="font-size: ; color: ; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="http://php.net/migration55" target="">php.net/migration55</a></div><br />
+ </section> </section>
+ <section>
+ <section id="php56">
+ <h2 margin-bottom="2em">PHP 5.6</h2><br>
+ <div align="" style="font-size: 2em; color: ; margin-left: 0em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="http://php.net/spec" target="">http://php.net/spec</a></div><br />
+ </section>
+<section id="php56variadic">
+ <h4 class="p">✔ Variadic functions</h4>
+ <pre><code>class MySQL implements DB {
+ public function query($query, ...$params) {
+ $stmt = $this->pdo->prepare($query);
+ $stmt->execute($params);
+ return $stmt;
+ }
+}
+
+$q = 'SELECT * FROM users WHERE id = ?';
+$user = $db->query($q, $userID)->fetch();</code></pre>
+ </section>
+<section id="php56unpack">
+ <h4 class="p">✔ Argument Unpacking</h4>
+ <pre><code>// A better call_user_func_args
+$args1 = [1, 2, 3];
+$args2 = [4, 5, 6];
+test(...$args1, ...$args2); // [1, 2, 3, 4, 5, 6]
+test(1, 2, 3, ...$args2); // [1, 2, 3, 4, 5, 6]
+test(...$args1, 4, 5, 6); // Fatal error: Cannot use positional argument after argument unpacking</code></pre>
+ </section>
+<section id="php56constscalar">
+ <h4 class="p">✔ Constant scalar expressions</h4>
+ <pre><code>class Foo {
+ const FOO = 1 + 1;
+ const BAR = 1 << 1;
+ const GREETING = "HELLO";
+ const BAZ = self::GREETING." WORLD!"
+}</code></pre>
+ </section>
+<section id="php56pow">
+ <h4 class="p">✔ Add right-associative power operator **</h4>
+ <pre><code>echo 2 ** 3 ** 2; // 512 (not 64)
+echo -3 ** 2; // -9 (not 9)
+echo 1 - 3 ** 2; // -8
+echo ~3 ** 2; // -10 (not 16)</code></pre>
+ </section>
+<section id="php56opoverload">
+ <h4 class="p">✔ Internal operator overloading for internal features like GMP</h4>
+ <pre><code>echo 2**512;
+echo "\n";
+$n = gmp_init(2);
+echo $n**512;</code></pre>
+ <pre><code>1.3407807929943E+154
+13407807929942597099574024998205846127479365820592393377723561443721764030073546976801874298166903427690031858186486050853753882811946569946433649006084096
+ </code></pre> </section>
+<section id="php56use">
+ <h4 class="p">✔ use function and use const namespace imports</h4>
+ <pre><code>include 'template.inc';
+include 'db.inc';
+use function template\header, template\footer, db\query;
+
+header('My Page');
+query('select * from stuff');
+footer();</code></pre>
+ </section>
+<section id="php56_0">
+ <h4 class="p">✔ default_charset ini now applies to internal funcs</h4>
+ <h4 class="p">✔ SSL Peer verification by default</h4>
+ <h4 class="p">✔ openssl certificate fingerprints</h4>
+ <h4 class="p">✔ SAN x509 ext matching when verifying host names</h4>
+ <h4 class="p">✔ automatic DoS prevention of TLS renegotiation attacks</h4>
+ <h4 class="p">✔ and many more openssl-related options</h4>
+ </section>
+<section id="php56_1">
+ <h4 class="p">✔ Asynchronous PostgreSQL database connections</h4>
+ <h4 class="p">✔ Non-blocking PostgreSQL queries</h4>
+ <h4 class="p">✔ New phpdbg SAPI</h4>
+ <h4 class="p">✔ Support for > 2GB file uploads</h4>
+ <h4 class="p">✔ The php://input stream is now re-usable</h4>
+ <h4 class="p">✔ Added hash_equals() for timing attack safe string comparison</h4>
+ <h4 class="p">✔ Added gost-crypto (CryptoPro S-box) hash algorithm</h4>
+ <h4 class="p">✔ FPM workers can now change their apparmor profile</h4>
+ <h4 class="p">✔ OCI8 Improvements</h4>
+ </section>
+<section id="php56_done">
+ <div align="" style="font-size: ; color: ; margin-left: ; margin-right: ; margin-top: ; margin-bottom: ;"><a href="http://php.net/migration56" target="">php.net/migration56</a></div><br />
+ </section> </section>
+ <section>
+ <section id="php7">
+ <h2 margin-bottom="2em">PHP 7</h2><br>
+ <h4 class="p">✔ phpng engine improvements</h4>
+ <ul>
+ <li>10-25% performance gain on most realworld applications</li>
+ <li>lower memory usage</li>
+ <li>Cleans up some things for a future JIT</li>
+ </ul>
+ </section>
+<section id="php7ast">
+ <h4 class="p">✔ Abstract Syntax Tree</h4>
+ <h4 class="p">✔ 64-bit integer support on Windows</h4>
+ <h4 class="p">✔ Catchable "call to member function of non-object"</h4>
+ <h4 class="p"> </h4>
+ <p class="p">Still very early. Many more things could be added </p>
+ </section> </section>
+ <section>
+ <img src="/presentations/slides/intro/lovehack-white-1000.png" width="1001" height="421">
+ </section>
+ <section data-background="#000000">
+ <img src="/presentations/slides/intro/rasmus.jpg" width="523" height="700">
+ </section>
+ <section data-background="#000000">
+ <img src="/presentations/slides/intro/Greenland1.jpg" width="1024" height="685">
+ </section>
+ <section data-background="#000000">
+ <img src="/presentations/slides/intro/Greenland2.jpg" width="1024" height="685">
+ </section>
+ <section data-background="#000000">
+ <img src="/presentations/slides/intro/Greenland3.jpg" width="1024" height="685">
+ </section>
+ <section>
+ <h2>Work on things that matter (to you)</h2>
+ </section>
+ <section>
+ <h2>Sense of Purpose</h2>
+ <h4 class="p">The Purpose Economy: How Your Desire for Impact, Personal Growth and Community Is Changing the World</h4>
+ <h4 class="p">by Aaron Hurst</h4>
+ </section>
+ <section>
+ <h4 class="p">We are running out of things that can be solved in isolation with our keyboards</h4>
+ </section>
+ <section>
+ <section id="sahana0">
+ <img src="/presentations/slides/intro/slideshow_images/sahana3.png" width="1000" height="720">
+ </section>
+<section id="sahana1">
+ <img src="/presentations/slides/intro/slideshow_images/sahana_final.png" width="1000" height="720">
+ </section> </section>
+ <section>
+ <img src="/presentations/slides/intro/barros1.png" width="480" height="320">
+ <img src="/presentations/slides/intro/barros2.jpg" width="250" height="196">
+ <img src="/presentations/slides/intro/barros3.jpg" width="250" height="367">
+ <img src="/presentations/slides/intro/sasa.jpg" width="600" height="400">
+ </section>
+ </div>
+
+ </div>
+
+ <script src="/reveal.js/lib/js/head.min.js"></script>
+ <script src="/reveal.js/js/reveal.min.js"></script>
+
+ <script>
+
+ // Full list of configuration options available here:
+ // https://github.com/hakimel/reveal.js#configuration
+ Reveal.initialize({
+ controls: true,
+ progress: true,
+ history: true,
+ center: true,
+ backgroundTransition: 'none',
+
+ theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
+ transition: Reveal.getQueryHash().transition || 'linear', // default/cube/page/concave/zoom/linear/fade/none
+ transitionSpeed: 'fast',
+
+ // Parallax scrolling
+ // parallaxBackgroundImage: 'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg',
+ // parallaxBackgroundSize: '2100px 900px',
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+ dependencies: [
+ { src: '/reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
+ { src: '/highlight.pack.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
+ { src: '/reveal.js/plugin/zoom-js/zoom.js', async: true, callback: function() { return !!document.body.classList; } },
+ { src: '/reveal.js/plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
+ ]
+ });
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+
+ </body>
+</html>
diff --git a/mx14.xml b/mx14.xml
new file mode 100644
index 0000000..8ae6fd0
--- /dev/null
+++ b/mx14.xml
@@ -0,0 +1,54 @@
+<presentation
+ template="simple"
+ navmode="html"
+ titlecolor="#000000"
+ navbarbackground="#bbbbbb"
+ navbartopiclinks="0"
+ logo1="images/php-med-trans.png"
+ titlesize="6em"
+ navbarheight="3.5em"
+ examplebackground="#ffffff"
+ outputbackground="#ffffff"
+ exampleclass="noshadow"
+ exampleoutputclass="noshadow"
+>
+
+<topic>PHP</topic>
+<title>Coding and Dreaming</title>
+<event>PHPConMX</event>
+<location>Mexico City</location>
+<date>Sept. 26, 2014</date>
+<speaker>Rasmus Lerdorf</speaker>
+<url>http://talks.php.net/mx14</url>
+<twitter>@rasmus</twitter>
+
+<slide>slides/intro/titlepage.xml</slide>
+
+<slide>slides/intro/nold.xml</slide>
+<slide>slides/intro/nold2.xml</slide>
+<slide>slides/intro/nold3.xml</slide>
+<slide>slides/intro/phpannounce.xml</slide>
+<slide>slides/intro/capi.xml</slide>
+<slide>slides/intro/eco.xml</slide>
+<slide>slides/intro/wwht2.xml</slide>
+<slide>slides/intro/wwht1.xml</slide>
+
+<slide>slides/intro/2014_title.xml</slide>
+
+<slide>slides/intro/php55.xml</slide>
+<slide>slides/intro/php56.xml</slide>
+<slide>slides/intro/php7.xml</slide>
+
+<slide>slides/intro/lovehack.xml</slide>
+<slide>slides/intro/greenland0.xml</slide>
+<slide>slides/intro/greenland1.xml</slide>
+<slide>slides/intro/greenland2.xml</slide>
+<slide>slides/intro/greenland3.xml</slide>
+
+<slide>slides/intro/matter.xml</slide>
+<slide>slides/intro/purpose.xml</slide>
+<slide>slides/intro/matter2.xml</slide>
+<slide>slides/intro/sahana.xml</slide>
+<slide>slides/intro/etsy_access.xml</slide>
+
+</presentation>
diff --git a/slides/intro/capi.xml b/slides/intro/capi.xml
new file mode 100644
index 0000000..1f41270
--- /dev/null
+++ b/slides/intro/capi.xml
@@ -0,0 +1,6 @@
+<slide title="">
+<break lines="8"/>
+
+<blurb fontsize="8em">C API for the Web</blurb>
+
+</slide>
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+<slide title="">
+<break lines="4"/>
+
+<blurb fontsize="6em">PHP Announcement June 8, 1995</blurb>
+<blurb fontsize="4em">Posted to comp.infosystems.www.authoring.cgi</blurb>
+<example type="html"><![CDATA[Subject: Announce: Personal Home Page Tools (PHP Tools)
+
+Announcing the Personal Home Page Tools (PHP Tools) version 1.0.
+These tools are a set of small tight cgi binaries written in C.
+They perform a number of functions including:
+
+. Logging accesses to your pages in your own private log files
+. Real-time viewing of log information
+. Providing a nice interface to this log information
+. Displaying last access information right on your pages
+. Full daily and total access counters
+. Banning access to users based on their domain
+. Password protecting pages based on users' domains
+. Tracking accesses ** based on users' e-mail addresses **
+. Tracking referring URL's - HTTP_REFERER support
+. Performing server-side includes without needing server support for it
+. Ability to not log accesses from certain domains (ie. your own)
+. Easily create and display forms
+. Ability to use form information in following documents
+
+Here is what you don't need to use these tools:
+
+. You do not need root access - install in your ~/public_html dir
+. You do not need server-side includes enabled in your server
+. You do not need access to Perl or Tcl or any other script interpreter
+. You do not need access to the httpd log files
+
+The only requirement for these tools to work is that you have
+the ability to execute your own cgi programs. Ask your system
+administrator if you are not sure what this means.
+
+The tools also allow you to implement a guestbook or any other
+form that needs to write information and display it to users
+later in about 2 minutes.
+
+The tools are in the public domain distributed under the GNU
+Public License. Yes, that means they are free!
+
+For a complete demonstration of these tools, point your browser
+at: http://www.io.org/~rasmus
+
+--
+Rasmus Lerdorf
[email protected]
+http://www.io.org/~rasmus]]></example>
+
+</slide>