# Surface Grid Walk

> Walk the dimension-by-lens grid across the catalog, mark every cell that carries a surface, and surface the empty cells as candidate gaps using the anomaly lens, so a missing aspect is detected structurally rather than by recollection.

Record: `algo:surface-grid-walk`
Kind: test-coverage
Canonical: https://banes-lab.com/ontology/algorithms#algo-surface-grid-walk
Closure: https://banes-lab.com/json/records/algo/surface-grid-walk/closure

## stage

- [see](https://banes-lab.com/records/stage/see.md)

## axis

- [analysis](https://banes-lab.com/records/reason/axis-analysis.md)

## composed-by

- [Test Coverage Kernel](https://banes-lab.com/records/algo/test-coverage-kernel.md)

## grounds

- [anomaly](https://banes-lab.com/records/reason/lens-anomaly.md)
- [semantic-correctness](https://banes-lab.com/records/reason/test-surface-semantic-correctness.md)

## derived-by

- [Test Coverage Kernel](https://banes-lab.com/records/algo/test-coverage-kernel.md)