This dialog box allows you to configure what the edit mode cursor looks like. Changing the edit cursor can be useful on certain screens so that the cursor stands out more against the text and color scheme you choose.
"After using Brief for many years, I did not look forward to learning
vi or Emacs on my UNIX machine. CRiSP came to the rescue. The program
has now grown and matured to the point where it has become much better
than Brief ever was."