API reference docs

I just started using Istio a few days ago (1.4.1 with kubectl v1.16.3, Helm 3.0.0, k3s v0.10.2 /8833bfd9).
Really impressed so far, installs, demos working well.
I make heavy use of the k8s API ref docs at https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.16 and was looking for similar reference materia at https://istio.io/docs/reference/ without finding them. Looked in the istio-1.4.1/install/kubernetes/istio-init/files/crd-10.yaml for the CRDs defining types like Gateway etc. & noticed the validation.openAPIV3Schema.properties.spec.description: “See more details at https://istio.io/docs/reference/config/networking/v1alpha3/gateway.html
Unfortunately, that page is not found.

Any chance the API reference material has a new home?
MTIA for any feedback & thanks for all the great work ongoing with Istio.

Thank you for the quick & helpful response.I now see that the 1.4.x pages are there, just not in the format similar to the k8s - that’s my fault for assuming such.
Thanks for pointing out the archive pages - opened my eyes a bit…