Function eraseDisplay

eraseDisplay (ED) clears the display or parts of the display. A screen is the shown part of the terminal display excluding the scrollback buffer. Possible values:

Default is 0.

 0: Clear from cursor to end of screen.
 1: Clear from cursor to beginning of the screen.
 2: Clear entire screen (and moves cursor to upper left on DOS).
 3: Clear entire display which delete all lines saved in the scrollback buffer (xterm).

```
CSI <n> J
```