What are the functions available in Rexx?

there are some inbuilt functions available in various programming languages. Rexx also comes with certain inbuilt functions. They are-

• Address- the environment where the Rexx command is currently running, the Address function returns the name of the same environment.
• Beep- this function is used to produce a particular sound in the system.
• DataType- if the input is a valid number, it will return the value of “NUM”. however, it will return “CHAR” if it is an invalid number. With this function, you can also specify if you want to compare the input value to a NUM or CHAR.
• Form- used for mathematical calculation on the system, this function returns the current setting of “numeric form”.
• ERRORTEXT- this function will return the Rexx error message associated with ‘errorno’. However, the error number needs to be between 0-99. USERID- this function is used to return the current user ID logged into the system.