Engineering reference

Current CPU measurements and implementation details accompany the compatibility and appearance records.

Reference	Contents
CPU benchmarks	Current ALH/QtALH comparison, raw results, validation, and reproduction.
Logging implementation	Circular-log checkpoints, recovery behavior, and current logging CPU results.
Appearance comparisons	Motif/Qt reference captures and remaining rendering differences.
Compatibility inventory	Feature evidence, protocol details, and acceptance gaps.

Original documentation

The original ALH manual and its images are included as a historical reference. For current Qt-specific options and workflows, use the modern guide and reference.