# 3. Reference (Builder Track)

For PMs and implementers using xly to define modules, forms, workflows, and
permissions through the BACK interface.

This is **recipe-style** reference: each page answers one question, with the
metadata-table column names and a worked example.

- [How to define a form](define-form.md) — `gdsconfigformmaster`/`slave` recipe.
- [How to define a virtual table](define-vtable.md) — `gdsconfigtbmaster`/`slave` recipe.
- [How to attach a workflow](attach-workflow.md) — `gdsmoduleflow` + `act_*` recipe.
- [How to set permissions](permissions.md) — `gdsjurisdiction` recipe.

If you need details on a specific table or proc, see the [Auto-Catalog](../../auto-catalog/index.md).