The Options Dialog
This dialog contains options that are in the toolbar and extra options that may come in handy in some situations. You can invoke it selecting → in the main menu.
These options have been presented in the Toolbar section.
Do not show files if no strings are found or replaced: shows only the files that match some of your strings. This will speed up the search.
When searching, stop on first string found: KFileReplace will stop when it finds a matching string, and will continue to search for other strings or, if you search for only one string, it will continue with the next file.
Follow symbolic links: if a file is a link to another one, then search in the real file.
Ignore hidden files and directories: if hidden files or folders are encountered, ignore them.