CLEARTEXT (CT)
Syntax	CLEARTEXT (CLEARTEXT window) CT (CT window)
Explanation	CLEARTEXT clears all text and places the cursor in the upper left corner of the Listener window. Optionally, the name of an Output window like the Trace window can be supplied as input
Example	REPEAT 5 [PR [GOOD EVENING]  GOOD EVENING  GOOD EVENING  GOOD EVENING  GOOD EVENING  GOOD EVENING  CLEARTEXT  (The listener window is empty) MAKE "TRACE 7 PR "HELLO HELLO (CLEARTEXT "OUTPUT) (The Trace window is empty)