text: document.write('\
  \
  <h1 id="rafeed">RSS/Atom Feed</h1>\
  <p>\
  An <span class="code">&lt;rss-ticker&gt;</span> element usually has attribute <a href="#a-url"><span class="code">url</span></a> set to \
  the url of the feed. The feed can support either the RSS format or the Atom format.\
  </p>\
  <p>\
  When an <em>rss-ticker</em> starts it fetches the feed using the url specified with attribute <a href="#a-url"><span class="code">url</span></a>. \
  Unless method <a href="#m-startticker"><span class="code">startTicker</span></a> is called with an url (see <a href="#startstop">Starting &amp; Stopping</a>). When a <em>run</em> ends \
  (i.e. all items have been displayed) a <em>new</em> run begins and <em>rss-ticker</em> fetches the latest feed, but only when the number of minutes \
  specified with attribute <a href="#a-refetch-mins"><span class="code">refetch-mins</span></a> have been passed since the last fetch.\
  </p>\
  <div style="display: flex; font-family: Arial; height: 4em; font-size: 120%;">\
  <div style="margin: auto 0.5em auto 2em; color: red; font-weight: bold; font-size: 200%;">!</div>\
  <div style="margin: auto 0 auto 0;">\
  When the value of attribute <a href="#a-url"><span class="code">url</span></a> has been changed then the new feed will be fetched using the new url when the current \
  run ends. However, if attribute <a href="#a-keep-url"><span class="code">keep-url</span></a> is set then the url used to fetch the feed will not change.\
  </div>\
  </div>\
  <p>\
  <em>rss-ticker</em> fetches the feed using Javascript\'s <a href="https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API" target="_blank"><span class="code">fetch</span></a> \
  function. Property <a href="#p-fetchopts"><span class="code">fetchOpts</span></a> can be set for an <em>rss-ticker</em>. The value is the "init" object \
  (request options) for the call to <a href="https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API" target="_blank"><span class="code">fetch</span></a>. \
  It may contain several settings related to the fetching. See <a href="https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch" target="_blank">Javascript documentation</a>.\
  </p>\
  <p>\
  Attribute <a href="#a-proxy-url"><span class="code">proxy-url</span></a> can be set to an url to redirect the fetch. For example to fetch the feed through \
  another server because of CORS restrictions. The url text <b>must</b> contain <span class="code">%%_URL_%%</span>. If this attribute is set, then the url \
  used to fetch the feed is constructed by taking the value of <a href="#a-proxy-url"><span class="code">proxy-url</span></a> and to replace <span class="code">%%_URL_%%</span> \
  with the feed url (attribute <a href="#a-url"><span class="code">url</span></a>).\
  </p>\
  <p>\
  If something goes wrong while fetching a feed (e.g. a 404), the ticker will display just one item. The first (title) line of the item shows the error message, \
  and the second line shows the actual (constructed) url that was used to fetch the feed. A new fetch will be performed \
  (but maybe with another url) at the end of a run (showing the error message) when <a href="#a-refetch-mins"><span class="code">refetch-mins</span></a> minutes \
  have been passed. Or, at the end of a run, when attribute <a href="#a-url"><span class="code">url</span></a> has been changed. An <em>rss-ticker</em> can always \
  be restarted by calling it\'s method <a href="#m-startticker"><span class="code">startTicker</span></a>.\
  </p>\
  <p>\
  Set attribute <a href="#a-no-imgs"><span class="code">no-imgs</span></a> to prevent fetching images.\
  </p>\
  ');