Depending on the rangefinder model, there are 2 target modes available. In rangefinders that are designed for golf players, the First Target Priority Mode is the most important, because normally the players measure the flagstick, and this is usually the nearest object they measure. That's why the rangefinder ignores all further objects like trees, mounds and so one, so the player has the only one measurement that is the most important.
The second target mode is the Distant Target Priority Mode. This one is very useful for hunters because rangefinders with this mode ignore all foreground distractions and show only the furthest distance. This is exactly opposite like the First Target Priority Mode since at golf the most important measurement is normally the closest, but in hunting, the farthest distance.