New Gerber Layer Format Specification
Ucamco has published a new revision of the Gerber Layer Format Specification.
The formal grammar of the complete language, in an Extended Backus-Naur Form, is now integrated in the specification. Furthermore the G74 arc mode and moiré primitive were deprecated. An investigation of a representative sample of 10,000 recent files revealed that these constructs were very rarely used, and the same result can easily be achieved by the remaining often used constructs. It is our constant aim to keep the language as simple as possible, and eliminate superfluous elements.
You will find the full specification here.