The REXX programming language includes built-in functions that simplify programming. REXX Functions let you manipulate data strings or do mathematics simply with a minimum of programming effort.
This book explains 78 REXX functions that you can use in your REXX programs. This book is about z/OS TSO REXX functions. A function is a built-in feature of the REXX language. Functions are always available to you when you are writing your program...