Y&Y were a small TeX distributor, whose Windows TeX system was highly thought of. The business ceased trading 2003, and TUG was granted the right to distribute it; this version has been adjusted in a small way, and can run under Windows 7 & 8 (which were a fair time in the future when TUG was granted its rights).

The program can only produce DVI files; users should acquire a DVI reader elsewhere.

The authors are Clerk Ma and Berthold K. P. Horn.