# `MishkaGervaz.Form.Verifiers.ValidateChrome`
[🔗](https://github.com/mishka-group/mishka_gervaz/blob/v0.0.1-alpha.3/lib/mishka_gervaz/form/verifiers/validate_chrome.ex#L1)

Validates the chrome entities (header, footer, notice) declared inside
the `layout` section of MishkaGervaz form DSL.

Three checks, in order:

  1. Notice names are unique within a form.
  2. Notice positions are valid atoms or `{:before_group, name}` /
     `{:after_group, name}` tuples that reference an existing group.
  3. Notice `only_steps` references existing step names.

Position-shape validation is delegated to
`MishkaGervaz.Form.Entities.Notice.validate_position/1`.

See `MishkaGervaz.Form.Dsl.Layout`,
`MishkaGervaz.Form.Entities.Notice`,
`MishkaGervaz.Form.Verifiers.Helpers`, and sibling verifiers.

---

*Consult [api-reference.md](api-reference.md) for complete listing*