It would be very helpful if, when running a 15K line sql script and
errors are encountered, the cursor could jump to the line in question
so that it would be apparent where the problem is. Perhaps each line
could be highlighted as it was executed, and the window could scroll
to follow. The current behaviour is to add a dot to the left of the
problem line, but it doesn't really stand out enough when paging
through the script at high speed.