In "Replace" and "Fast Replace" Dialog, there is a "Search" or "Batch Search" button.
User can click "Search" button instead of "Replace".
The "Search" operation is similar to "Replace" operation, the only difference is "Search" operation will not write Output page and Output file, even user provide Output page and Output file.
User can use this Feature to do a "Trial" of Replace, if the result is not correct, user can modify the command then click "Replace".
If user only want to know how many words matches specific pattern, he can also do "Search" instead of "Replace".