Functions play an important role in REXX. In particular, the functions for word and string processing. When you have worked through the next chapter, you might be amazed about what you can do with the REXX functions. So, have fun reading about the REXX functions! The REXX language we can use on z/OS TSO/E consists of two blocks of language elements:
–The REXX commands, as we learned in chapter 3 The REXX commands on page 25.
–The large stock of standard functions that belong to the REXX language and which we will discuss in this chapter.
We now turn to the second part, the REXX functions. I will not discuss any function that is described in the brochure TSO/E REXX reference, but only those that are in my opinion often needed ...