Position the cursor on the screen and clear to the end of the screen
@<expN1>,<expN2> CLEAR TO <expN3>,<expN4> [BOLD] [REVERSE]
The @...CLEAR command positions the cursor at the specified row <expN1> and column <expN2> on the screen and then clears the rest of the screen or window from that point downwards.
The @...CLEAR TO command clears a rectangular area of the screen or window, whose upper-left corner is at <expN1> and <expN2> and bottom left corner is at <expN3> and <expN4>. If the REVERSE keyword is specified, the area is displayed in reverse video. If the BOLD keyword is specified, the area is displayed in highlighted reverse video.