When you move forward again in the Wizard your new terms are automatically incorporated into other program fields. If you highlight a reg exp operator or some literal text in the Expression list, the effect is seen as blue text in the sample. Red text shows the other aspects of the sample affected by the overall search expression. Black text is the part not affected. The Replace Expression is also broken down into component parts.
Context highlighting is available here also.
The Expression Type pick list quickly inserts them by number. The last screen puts everything together to show you the sample text and what the result will be if you were to implement the terms in Search and Replace on a real file. You can move all the way back to the opening screen if you want, make changes, and then come back here. If your work passes muster, click on Finish and the strings you made will be inserted into Search and Replace. 2001 Funduc Software.