You can use any alphanumeric characters for basic string matching purposes.
- lower case 'a' through 'z'
- upper case 'A' through 'Z'
- numerals '0' though '9'
Thus, typing "confidential" and marking the test as Case-Insensitive denotes that either "Confidential" or "confidential" will match. Likewise, the string "007forever" marked as Case-Sensitive denotes a search for the exact phrase "007forever".