update to latest docs including BASIC program location

pcbasic/doc/index.html

@@ -29,7 +29,7 @@
 </nav>
 <header>
 <h1>PC-BASIC 15.08.10 documentation</h1>
-<small>Last updated 2016-08-09 21:50:55.</small>
+<small>Last updated 2016-11-13 11:01:56.</small>
 </header>
 <nav class="toc">
     <h2 id="toc">Table of Contents</h2>
@@ -40,6 +40,7 @@ <h2 id="toc">Table of Contents</h2>
                     <ul>
                         <li><a href="#installation">Installation</a></li>
                         <li><a href="#basic-survival-kit">BASIC survival kit</a></li>
+                        <li><a href="#location-for-basic-programs">Location for BASIC programs</a></li>
                         <li><a href="#configuration">Configuration</a></li>
                         <li><a href="#getting-programs">Getting programs</a></li>
                     </ul>
@@ -432,7 +433,7 @@ <h3 id="installation">Installation</h3>
 <li>run the installer  </li>
 <li>to start, click PC-BASIC in your Start menu  </li>
 </ul>
-<p>On <strong>OS X</strong>:  </p>
+<p>On <strong>Mac</strong>:  </p>
 <ul>
 <li>mount the disk image  </li>
 <li>to start, double click the PC-BASIC app  </li>
@@ -461,6 +462,13 @@ <h3 id="basic-survival-kit">BASIC survival kit</h3>
 <code>SYSTEM</code> exits PC-BASIC immediately, discarding any unsaved program or data.  </p>
 <p>Use one of the key combinations <code>Ctrl+Break</code>, <code>Ctrl+Scroll Lock</code>, <code>Ctrl+C</code> or <code>F12+B</code>
 to interrupt a running program and return to direct mode.  </p>
+<h3 id="location-for-basic-programs">Location for BASIC programs</h3>
+<p>By default, PC-BASIC looks for programs in your home folder.  </p>
+<ul>
+<li>On <strong>Windows</strong>, this is usually a folder with your user name, located under <code>C:\Users\</code>. You can find this folder in Windows Explorer by typing <code>%USERPROFILE%</code> in the address bar.</li>
+<li>On <strong>Mac</strong> and <strong>Linux</strong> this is the directory <code>~/</code>.</li>
+</ul>
+<p>See <a href="#mounting">the documentation on accessing your drives</a> for more information.</p>
 <h3 id="configuration">Configuration</h3>
 <p>You can supply options to change PC-BASIC's behaviour by editing the configuration file. If you install the Windows package, the installer will automatically create a shortcut to this file in the PC-BASIC start menu folder. The file can also be found in the following location:</p>
 <table>
@@ -476,7 +484,7 @@ <h3 id="configuration">Configuration</h3>
 <td><code>%APPDATA%\pcbasic\PCBASIC.INI</code></td>
 </tr>
 <tr>
-<td>OS X</td>
+<td>Mac</td>
 <td><code>~/Library/Application Support/pcbasic/PCBASIC.INI</code></td>
 </tr>
 <tr>
@@ -6078,7 +6086,7 @@ <h5>Notes</h5>
         <ul>
             <li>
                 <code>FIX</code> truncates towards zero: it removes the fractional part. By contrast, <code><a href="#INT">INT</a></code>
-                truncates towards negative infinity. For negative <code><var>x</var></code>, <code>FIX(<var>x</var>)-INT(<var>x</var>)=1</code>.
+                truncates towards negative infinity.
             </li>
         </ul>
         <h5>Errors</h5>
@@ -6443,7 +6451,6 @@ <h5>Notes</h5>
             <li>
                 <code><a href="#FIX">FIX</a></code> truncates towards zero: it removes the
                 fractional part. By contrast, <code>INT</code> truncates towards negative infinity.
-                For negative <code><var>x</var></code>, <code>FIX(<var>x</var>)-INT(<var>x</var>)=1</code>.
             </li>
         </ul>
         <h5>Errors</h5>