# Strings > What are some interesting input tests for a simple string field? ## Strings * Nothing * Empty field (clear the default value) * Null character (ASCII 0) * Whitespace only (tab, space, CR (ASCII 13), ASCII 127) * ` ` * More available: * Hyphenated last names * Rainbolt-greene * Strings + Unicode * See emjois below * Unicode like Emjois * Names like Chris 💣 (bomb) * [Awesome Unicode](https://github.com/Wisdom/Awesome-Unicode) * [Big List of Naughty Strings](https://github.com/minimaxir/big-list-of-naughty-strings) ## Uses * eCommerce fields during checkout * Forms --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guides.kenst.com/data/strings.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.