+<a href="lookup">YARRG</a> -
+ Yet Another Revenue Research Gatherer
+|
+<a href="devel">development</a>
+|
+<a href="intro">introduction</a>
+|
+<b>documentation</b>
+
+<h1>Looking up data in YARRG</h1>
+
+YARRG (Yet Another Revenue Research Gatherer) is a third-party tool
+for helping find profitable trades and trade routes in Yohoho Puzzle
+Pirates. See the <a href="intro">Introduction</a> for more details.
+
+<p>
+
+The <a href="lookup">Market prices database</a> is the main output
+from YARRG. It offers a variety of enquiry options.
+
+<p>
+
+Hopefully you will be able to work it without too much help, but this
+documentation page contains information about the database website
+which you may not be able to divine from the online user interface.
+
+<h2>Bookmarkable URLs</h2>
+
+Mostly, you can bookmark the specific pages and queries. Select the
+ocean, query page, and other combinations of options, as you wish, and
+perhaps fill in the actual data fields too, and bookmark the resulting
+URL.
+
+<p>
+
+(An exception to this is if you select the `Update' option from the
+`Trades for route' lookup; the list of (de)selected stalls is too long
+to fit in a URL.)
+
+<h2>Dynamic confirmation of meaning of text entry boxes</h2>
+
+If you have Javascript enabled, the various text entry boxes will be
+annotated with a brief explanation of the system's interpretation of
+your current entry string. To get the actual results updated, you
+must still hit `Go' or `Update'.
+
+<h2>Trades for route</h2>
+
+Given a list of islands (or archipelagoes), provides a list of
+potentially profitable trades. If the route is suitable for the trade
+route optimiser, it will generate a complete voyage plan, telling you
+which goods to buy and sell where at which stalls and prices.
+
+<p>
+
+If you specify only one island or one archipelago, the site shows only
+arbitrage trades. If you want single-hop trades within an
+archipelago, you must enter the archipelago name twice.