disambiguate — make a requirement readable exactly one way

A requirement is read by someone who cannot ask you what you meant. Every reading your words permit is a system someone might build.

Why an aerospace writing standard is the right source

ASD-STE100 Simplified Technical English exists because maintenance manuals were killing people. Technicians across dozens of first languages read procedures written by native English engineers, misread them, and aircraft came apart. The standard is not a style guide that emerged from taste. It is an incident ledger. Each rule closes one observed way a reader went wrong.

Its design assumptions are worth stating plainly, because they are what makes it transfer: