replace in frame:searchable<%>
If the selected text matches the search string, this method replaces
the text with the contents of the replace text. If the replace was
successful, #t is returned. Otherwise, #f is returned.
replace in frame:searchable<%>
If the selected text matches the search string, this method replaces
the text with the contents of the replace text. If the replace was
successful, #t is returned. Otherwise, #f is returned.