TTX is an application to convert OpenType and TrueType files to and from an
XML-based text format, also called TTX.

The TTX setup application can create an icon for TTX on your desktop. You will
then be able to drop .TTF or .OTF files onto the ttx.exe icon to dump the font
to a .TTX file. Dropping a .TTX file onto it builds a TTF or OTF font.

Also, the setup puts a shortcut to TTX in your Send To context menu in Windows 
Explorer. Click on any OTF, TTF or TTX file with the right mouse button, 
choose Send To and then TTX. 

For more information, see documentation.html