In the overview of Protobuf Editions is a [proto3 example](https://github.com/protocolbuffers/protocolbuffers.github.io/blob/main/content/editions/overview.md#proto3-syntax-new-tab) that uses the removed default syntax: ```proto syntax = "proto3"; ... message Player { // in proto3, optional fields have explicit presence optional string name = 1 [default = "N/A"]; ... ```