The "XP" in the software's common nomenclature often leads to a misconception. It does not imply that the software is an edition of the Windows OS; rather, it signifies its peak compatibility with Windows XP, which was the dominant operating system for nearly a decade. During this time, the stability of the software on the XP platform made it indispensable.
Unlike modern systems that use Unicode, Bhasha Bharti often relied on "ASCII-based" encoding. This meant the text was tied to specific fonts; if you sent the file to someone without the software, they would just see a string of random English characters. The Challenge of Modern Downloads