Why this matters

If an offline preview cannot model the active plane or R-form accurately, it should warn rather than draw a confident but wrong line.

G-code is modal: a line can depend on state established many lines earlier, so inspect the active units, distance mode, motion mode and laser state together.

How to think about it

Define the result you actually need, then confirm the active machine profile, units and operating mode before changing parameters.

Practical workflow

  1. Define the result you actually need, then confirm the active machine profile, units and operating mode before changing parameters.
  2. Change one meaningful variable at a time and use Preview/Frame or offline analysis before running a real job.
  3. If the issue repeats, keep evidence: Console output, a G-code sample, the exact settings used and material context. Evidence makes troubleshooting reproducible.

If the result is wrong

If an offline preview cannot model the active plane or R-form accurately, it should warn rather than draw a confident but wrong line.