# String user defined functions Reference

Below is a complete list of the user defined functions available in AutoIt. Click on a user defined function name for a detailed description.

When using them you need to add a #include <String.au3>.

User Defined Function | Description
--- | ---
_HexToString | Convert a hex string to a string
_StringBetween | Find strings between two string delimiters
_StringExplode | Splits up a string into substrings depending on the given delimiters as PHP Explode v5
_StringInsert | Inserts a string within another string
_StringProper | Changes a string to proper case, same as the =Proper function in Excel
_StringRepeat | Repeats a string a specified number of times
_StringTitleCase | Changes a string to a title case string
_StringToHex | Convert a string to a hex string