-.BI "\-H, \-\-history " file
-Reads a file and displays the contents in a drop-down list, as for
-.B \-\-list
-above. Once the user has entered a string, a new list written to
-.I file
-containing the newly entered string as the first item; other lines
-matching the newly entered string are not written.
+.BI "\-p, \-\-prompt " prompt
+Sets the prompt string in the dialogue box to
+.IR prompt .
+The default is to have no prompt string.