I believe it has both. As far as I know, there are public discussions taken as advisory. Then the actual standards are written in a design-by-committee process.

I believe it has both. As far as I know, there are public discussions taken as advisory. Then the actual standards are written in a design-by-committee process. I believe those design meetings have public minutes, but participation requires being a member of the standards committee. I believer membership of the committee is possible through sponsorship with some seats being reserved for community members with high standing. How those seats are filled exactly I do not know.