Specify the Text to find and the Replace with text.
Mark the Match character case checkbox to only match on text with the same uppercase and lowercase characters.
Mark the Whole words only checkbox to prevent matching on parts of words.
Mark the Regular expression checkbox to interpret them as replacement-style regular expressions. Click on the Insert Regular Expression Element 
button to pick from a list of common regular expression terms. Click the RE Examples button for more info.
Specify the Side of the editor pane that should be searched.
