TERM$

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TERM$

System variable:  TERM$  
Length:  3  
Description: 
            The system variable named TERM$ contains the identification number of the terminal for the current program. 
            This value is a three-byte string in the form "Tnn", where "nn" is a value from "00" to "99". 

            When a program is running in a foreground partition, the value of TERM$ is identical to ITERM$. 
            However, for a program running in a background partition, TERM$ will contain a null value and ITERM$ will contain 
            the identification number of the terminal initiating the background process.