After performing a Search and Replace, the results page displays all the matches, with each match highlighted in yellow, set in the context in which it is found within the file.
Select the matches you want to replace, using the check box next to them. The file in which each match is found is presented as a live link, and if you click it, you can see a Preview view of the file, in case you need more context to help you decide whether to replace the match.
You can check the check box at the top to select or deselect the entire result set.
WorldServer performs the replacement without you having to manually check out the file.