The reference desk

Keep the source close to the decision.

Use the issuing authority for current requirements and the product manufacturer for the selected system. Planning examples are labelled as examples.

Sources + further reading

Source review: 2026-10-04. Requirements and programs can change; confirm the current details with the authority or provider.

A clearer next step

Tell HAUSE what you are planning, what you have observed and the decision you need help with.