This website provides free Garmin routable maps of the world. Select your desired map region and direct download the IMG file. The maps are generated from OpenStreetMap.
Other than giving the readings of your current altitude and temperature in the Altimeter mode, you can set your own altitude value. This is a way where you can use it to set it to zero for referencing the height of a climb or as a re-calibration of the altitude reading.
This city codes are provided in the watch user manual but for the ease of references in the web, I put this table in this blog in case i wanted to refer to it using my smartphone. Hope you find this useful.
Ever wonder why you can't copy and paste from and to vncviewer that is viewing a vnc session from a Linux machine? It's likely that the vncconfig program is not running to handle your clipboard transfer. If you are seeing that you are unable to copy and paste from your vncviewer, run this command at the Linux machine command line window through your vncviewer that is viewing your Linux vnc session: