Mio MIOMAP C220 - Manual (Page 41)

The Tilt buttons appear only at higher zoom levels. If you zoom out, they disappear.
4.6.2.3 Daylight & Night Modes (switch)
This button switches between the daylight and night colour schemes of MioMap. The
states of this button are:
Turn on or off the night colours manually to override the automatic colour scheme
switching.
Note: Using this option turns off the Automatic Night Colours feature. You need to re-
enable it at the General settings screen (Page 69) to have the colours change
automatically again.
4.6.2.4 Manage POI (Points of Interest)
Here you can set all the parameters of POIs that you have created and the visibility
of the built-in POIs that come with the map.
Manage built-in POI visibility
The maps in MioMap come with a huge number of POIs. Displaying all of them
would make the maps too crowded (to see how POI items are shown on the map
see Page 20). In order to avoid that, you can decide which POI groups to show and
which ones to hide on the map. MioMap has a multi-level POI category system. You
can set the visibility of the top two levels. All levels below that will be shown or
hidden according to their respective category (i.e. you can set the visibility of Petrol
Stations in the Services category, but all brands listed under that will either be shown
or suppressed together).