From QB64 Wiki
The TROFF statement turns off line number tracing.
- Currently NOT supported in QB64!
- When line number tracing is on, the line numbers of statements are output immediately before they are executed.
- Use TRON to turn on line number tracing.
- Line number tracing only has an effect when programs are compiled with debugging code (BC.EXE /D).
- Demonstrates simple line number tracing:
inside loop inside loop inside loop