X escape sequence

In the parameter to the String action, the  escape sequence allows the entry of a hexadecimal-encoded Unicode character. Up to 4 hexadecimal digits will be read after the. In 3270 mode, that character will be converted to EBCDIC using the host code page before being added at the current cursor position.

The  escape sequence is an alias for.

Examples
Enter the string. String("st\x0061r")