A few definitions..

• Match on action- This is an example of continuity editing. It helps the audience to continually understand exactly what is happening. It means that when something is happening in a scene, when there is a cut the same piece of action must be going on. For example; Exterior shot of a character opening the door is followed by an interior shot of the character entering the room.
  


• Shot/reverse shot- This is where the camera switches back and forth with the dialogue. This is the most common way in which dialogue is shot in TV dramas.
  


• The 180 degree rule- This is where the camera must not cross the 'line of action' otherwise the characters will appear on the other side of the screen, creating confusion for the audience.