Multiple choice technology mainframe

REXX has extended tracing possibilities, even interactively. Which command activates the interactive trace?

  1. TRACE R

  2. TRACE ?R

  3. TRACE IR

  4. INTTRACE R

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

TRACE R in REXX enables interactive tracing mode where the programmer can step through execution. The R stands for interactive/remote trace. TRACE ?R would prompt before each traced line, TRACE IR is not valid syntax, and INTTRACE is not a REXX command.