WBN-NNNN: Short title

• Status: Draft | Confirmed | Superseded by WBN-NNNN
• Question: one precise question
• Word build(s) observed: e.g. Microsoft 365 Current Channel, version and build number
• Compatibility modes covered: e.g. 15; 14 (not yet: 12, 11)
• Fonts used: families and file hashes on the reference machine
• Confidence: High (rule explains every observation) | Medium | Low
• Related: work packages, other notes, engine modules

Why it matters

Which documents and features this affects, and how badly layout diverges if we get it wrong.

Probes

Description of the generated probe set: which parameter varies, its range and step, and where the probe documents and generator settings are stored (T0 corpus identifiers).

Observations

Tables or charts of Word’s ground truth for the probes: positions, break points, heights. Link to the stored artifacts.

Rule

The behavior, stated precisely enough to implement, with formulas in BLU or the units Word appears to use, and the rounding at each step.

Counter-examples and limits

Anything the rule does not explain yet; conditions under which it was not tested.

Implementation and tests

Engine module that implements the rule; tests and T0 probes that lock it in.