Final answer:
The 'Replace' field (R) in Find & Replace utilities is the one where you enter the text that will replace the text entered in the 'Find' field (F). This utility is widely used for editing and managing documents, code, or data across various software applications.
Step-by-step explanation:
In most Find & Replace utilities within software applications, the 'Find' field (F) is where you enter the text that you want to search for, and the 'Replace' field (R) is where you enter the text that will replace the found text. When you initiate the operation, the application searches for all instances of the text in the 'Find' field, and then replaces them with the text provided in the 'Replace' field. This is a useful feature for editing documents, coding, or working with data in spreadsheets.