Is WinBox secure?

I could not find an answer to this. Is communications between a PC running WinBox to a router secured?

I would like to be able to use WinBox to look at routers from a remote location (via the internet), but would prefer that the communication be encrypted in one form or another (particularly passwords).

From the manual:

Secure mode - if checked, winbox will use TLS encryption to secure session

http://wiki.mikrotik.com/wiki/Manual:Winbox

Duh! Couldn’t find in the docs (still can’t BTW), but it’s right there on the connection screen!

Thanks