How do I remove the blinking line that appears at the beginning of a line when something is printed?
If you're talking about the cursor:
Nope, FB's Locate allows only 2 parameters, so there's no simple way to turn off the cursor.
If you mean the cursor that is moved by the mouse, that's not what I mean. It is the blinking sort of underline that appears on the left of a line that is being printed onto.
No, the text cursor. The blinking line that marks where you are typing is called a cursor.
Earlier today I applied a patch that adds support for cursor enabling/disabling via the third optional argument to LOCATE, as in QB. You may want to wait for next release of FB...