Convert UFO to OTB FONT

The Unified Font Object (UFO) is an XML-based file format for digital fonts, developed by Tal Leming, Just van Rossum, and Erik van Blokland. First released in 2003, it is designed to be cross-platform, human-readable, and application-independent. UFO files store font data in a structured manner, allowing for easy data exchange and manipulation across different font editing tools. The format has evolved through several versions, with UFO 3 being the latest release in 2012.

The OTB file extension, standing for "OpenType Bitmap", is a specialized format used in X11 for bitmap-only font files. It is a variant of the SFNT (scalable font) file format, tailored to store bitmap representations of fonts without vector outlines. Historically, OTB was developed to support the efficient rendering of fonts on systems with limited resources, ensuring the high-quality display of text. This format is particularly useful in environments where rendering performance is critical, such as older display systems or embedded systems.