The Find Text dialog box lets you specify the text you want to search for. To begin the search, choose Find Next. Choose Cancel to abandon it.
The Find what input box is where you enter the search string.
When the Match whole word only check box is checked, Instant Text looks for the string as a whole word (not as a substring of another word).
When the Match case check box is checked, Instant Text differentiates upper-case from lower-case when performing a search.