Post announcements, joining instructions and documents to an event's public noticeboard, and publish results files.
Posts, under Noticeboard, is the event's public noticeboard: joining instructions, a change to the programme, the prize-giving time. Everything posted here is public on the event page, unless the event is set to entrants only.
Results files publishes a results sheet, usually exported from Sailwave or whatever you score in, as a PDF, a web page, a spreadsheet or an image of up to 25 MB. It appears under Results on the public event page for anyone to download.
Your notice of race, sailing instructions or a club page can also go under Links in Settings. They appear as a Links tab on the event page.