# program.yaml The top level keys must be a *quoted date in yyyy-mm-dd format*. Each contains a list of events, which have the following properties: - `start`: time in hh:mm - `end`: time or null/omit if open ended - `title`, `description`, `location`, `annotation`: either de/en versions (like this [^1]) or simply a string if it should be the same for all languages. - `description`, `location` and `annotation` can use some markdown, e.g. hyperlinks or italics - `location` and `annotation` are optional. - `checkin_link`: optionally, a url where people need to register or can find more important information - `livestream`: true, if this event will be live streamed. Can be omitted otherwise. [^1]: ```yaml title: de: Begrüßung en: Grand Opening ``` Both en and de versions must be set and non-empty.