These pages detail all configuration options for the theme, plugin, and included page templates.
There are three ways to edit a page's configuration: Edit the file manually, go the admin panel and edit the page in normal mode, or go to the admin panel and edit the page in expert mode. Note that the third option (expert mode) is only available for pages, not for the theme or plugin configuration.
Avoid editing files manually. Certain essential events will not be triggered if you do not use the admin panel, which may mess up the site in unpredictable ways. Use the admin panel (normal or expert mode) and you will be fine.
This is the default page editing mode in the admin panel. All configuration options will be displayed as form fields you can fill out. Use this whenever possible.
There are a few options that are not included in the list of configuration fields but that are still available to you. For these, you will have to enter expert mode. It is recommended to only modify the fields you must in expert mode, as normal mode is better/safer. And make sure not to use expert mode to modify readonly or hidden fields that are not meant to be modified, such as tour/view/dataset/feature ids.