Vivotek SC8131 User Manual page 97

The display elements are illustrated below:
Tracking
block
Position
Functional Items:
Use the following keyboard keys to register and verify the counts:
Hotkey Description
↑
Press to register an "In" count.
↓
Press to register an "Out" count.
Space Play or Pause a video.
+ -
Speed up or speed down.
←
Moves back to the previous second.
→
Moves forward to the next second.
←
Moves back to 3 seconds ago.
Shift &
→
Moves forward to 3 seconds later.
Shift &
ID
Rule
Direction
Height
VIVOTEK
User's Manual - 97