Does it support navigation(stakeout) application
Yes, there is a "Navigate to target" tool to find/stakeout points near a desired location. You will find a detailed specification about this tool in to following topic of the Reference Manual at "Navigate to Target (Staking out points)" http://www.digiterra.hu/wiki/en/downloads/DigiTerra_Explorer_v6_RefGuide/the_gps_toolbar.htm