Regular Expression

This action is similar to a Find & Replace one, except this uses regular expressions.
| Field | Description | 
|---|---|
| Apply to | Section of the filename to apply the changes to (Name Only, Name & Extension, Extension Only). | 
| Find | Text in the filename that will be searched for and replaced. | 
| Replace | Text to replace the value in the Find field. | 
    
| Case Sensitive | This field is used to tell Renamer whether the matching in the Find field will depend on upper- or lowercase letters. | 
    
You can find a full guide to regular expressions here.