If you enable offline mode, all data will be downloaded ahead of time, allowing you to use all database features even if you're working without an internet connection.
Note that, while in offline mode, the data you see will never be updated, so it is only recommended when going into an event venue or similar situation!
(If you're viewing this on your home computer, this switch is probably not for you.)
In floor mode, only information printed on the card itself will be shown.
Any supplementary details, such as FAQ and Q&A entries, will be hidden.