When a c-sh-E (or the like) is done on a "form" lacking proper closing of parentheses, a "read error: end of file" occurs and the entire form to that point is displayed in the typein area, scrolling at high speed. Why not truncate it with just enough prinlevel and prinlength to read it, or give him an option to do Find Unbalanced Parens? The current solution isn't one.