Over the weekend I built Unicode Lookup, a tool that lets you search for any Unicode character by name, or by codepoint number. A table of the characters with their decimal, octal, hex, and HTML entity representations is shown as results.

The core purpose of the tool is to aid web-development by making it easy to find the HTML entity for any character. It’s also useful for finding a character by class (e.g. math symbols) for copy & paste into documents.

As ASCII is a subset of Unicode, the tool also serves as a full ASCII (and Latin-1 etc) character reference.

Unicode Lookup is based on John Walker’s command-line tool unum.

The Microsoft Office binary file formats documentation provides detailed technical specifications for the .doc, .ppt .xls, and .xlsb file formats as created by the following Microsoft Office applications:

• .doc: Microsoft Word 97, Microsoft Word 2000, Microsoft Word 2002, Microsoft Office Word 2003, Microsoft Office Word 2007
• .ppt: Microsoft PowerPoint 97, Microsoft PowerPoint 2000, Microsoft PowerPoint 2002, Microsoft Office PowerPoint 2003, Microsoft Office PowerPoint 2007
• .xls: Microsoft Excel 97, Microsoft Excel 2000, Microsoft Excel 2002, Microsoft Office Excel 2003, Microsoft Office Excel 2007
• .xlsb: Microsoft Office Excel 2007