Provide an immediate feedback on Plan S

The guidance on the implementation of such an initiative has been sketched by Coalition S which is currently stimulating a large number of comments and reactions from learned societies, funding agencies and scientific publishers.
Plan S is an European initiative which has and will have indeed a large impact on a global scale. Your feedback, as an individual or as representative of an association/institution/company, is highly valuable and you are warmly invited to provide it.
The deadline is very close: 1st February 2019.