Using comments

Although it's possible to use multi-line comments in REXX programs, it's 
not advisable. Multi-line comments can make it very difficult to search an 
error in REXX programs.   

Note:  Because nested comments are allowed in REXX, you should use the 
       following technique to use the strings to mark the beginning and 
       the end of a comment in a string: 
       "/" || "*" 
       and 
       "*" || "/"