• Full C99 & C11 standard library support with wide strings, atomics, floating-point environment, and threads.
• Pixel-perfect code line numbering from line 1 to document end with smooth 60+ FPS scrolling.
• Accurate program execution run time measurement isolated from compilation overhead.
• Advanced execution classification distinguishing normal non-zero exits from fatal crashes.
• Instant session cancellation and synchronized restart stability without crashes.