Hypothesized Official Name: curRow
Memory Address: 8459h
Length: 1 byte
Stores the current cursor row (Y position) for large (fixed-width) font display routines.
This is used by PutMap, PutC, and many other system routines that call PutMap and PutC, such as PutS, PutPS, and DispHL.
Permissible values for curRow range from 0 (top of screen) to 9 (bottom of screen), inclusive.