http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=Dunfield_Help 2026-10-18T03:17:17Z Revision history for this page on the wiki MediaWiki 1.19.2 http://fileformats.archiveteam.org/index.php?title=Dunfield_Help&diff=52113&oldid=prev 2026-10-05T23:05:28Z

<p>Created page with &quot;{{FormatInfo |formattype=electronic |subcat=Help files |extensions={{ext|hlp}} }} The help files used by tools written by Dave Dunfield use a self-defined file format. == Spe...&quot;</p> <p><b>New page</b></p><div>{{FormatInfo<br /> |formattype=electronic<br /> |subcat=Help files<br /> |extensions={{ext|hlp}}<br /> }}<br /> The help files used by tools written by Dave Dunfield use a self-defined file format.<br /> <br /> == Specifications ==<br /> <br /> Sources can be found in IMD.C. There is no file header. The topics are stored sequential. Each topic starts with a 16-bit little-endian integer, indicating the number of bytes of ASCII topic data to follow. The topics are addressed by zero-based index number.<br /> <br /> The contents of the topic can contain the following special codes:<br /> 00 = new line, to be replaced by 0x0A<br /> 0E = start of link<br /> 0F = end of link, followed by a byte with the topic index number<br /> 09 = tab<br /> 12 = dos character, up/down arrow<br /> 18 = dos character, up arrow<br /> 19 = dos character, down arrow<br /> 1A = dos character, right arrow<br /> 1B = dos character, left arrow<br /> <br /> == Identification ==<br /> The files do not have a easy to detect signature. A way to detect is to check the 16-bit size is &gt;128 and &lt;1024, and not beyond the end of the file. Then scan the topic data for valid special/ASCII codes. If more then lets say 2 valid topics have been read then assume it is a Dunfield HLP file.<br /> <br /> == Sample files ==<br /> * IMD.HLP<br /> * H8.HLP<br /> * HORIZON.HLP</div>

Arnoudmulder