1. two dimensional paragraph oriented text editing
2. fast vertical scroll
3. support for any font, any colors, any area size
3. selectable left, right and center justification, and auto-fill
4. easy cursor movement, mouse cursor positioning
5. maximum line size of 65536 signs, maximum number of lines from 1 to 65536: areas can be bounded to a given number of lines - of signs with a non-proportional font
6. return codes when cursor keys are pressed on the top and bottom bounds of the area
7. optional filtered input
8. linear insertion and deletion algorithms for speed
