Finders Keepers™ has four ways to find text in files.
| Kind of Find | Description | Whole Word | Case | Binary & Multiple Lines | Boolean (And/Or) |
| Plain-text | All the text in Find is taken literally. Nothing is regarded as a symbol. If Case-sensitive is selected, a match must be exactly like the text in Find. If Case-sensitive is not selected, a match must be like the text in Find except for upper and lower cases, which are ignored. | Yes | Yes | Yes | |
| Regular Expression | The text in Find is taken as a Regular Expression if one or more regular-expression symbols are in the text. If there are no symbols such as “[]+?”, and so on, the text is taken literally, as in a Plain-text search. | Yes | Yes | Yes | Yes |
| Approximate | The text in Find is taken literally, but errors, or discrepancies, are allowed in the text that is matched. Set the Approximate Search # Errors in Options - Find. | Yes | Yes | No | Yes |
| Sound-alike | The text in Find is reduced internally to four characters that represent its “sound.” Text in files is matched to this sound. | Yes | No | No | No |