Once a match is found in the notebook, choosing Replace in the Find dialog box replaces the selected match with the new text contained in the Replace with: field.
The following choices may be made in the Find dialog box:
search forward for the next occurrence
search backward for the next occurrence
select all cells containing the search string
conduct a case-insensitive search
wrap search through end back to starting point
Once your search string has been entered, it can be used by all the commands in the Find menu including Find Next, Replace, Replace All, and Replace and Find Next. Edit ► Enter Selection is a convenient way to copy text from your notebook into the Find dialog box.