Quarter PIP

Quarter PIP = Quarter Size “Picture In Picture” is a freeware filter whose main purpose is to resize a video clip to a quarter of its size, in Final Cut Express, to make room for other video clips within the same frame; as a matter of facts it is also possible to reduce it to one half (instead of a quarter).

The PIP background is transparent to allow compositions of many video clips in the same frame by stacking them in the timeline tracks.
You can choose the position of the PIP within the frame, and among others you can also: add a colored border around the clip, additionally scale the clip, use 3 different area sizes as a reference for scaling, and move the PIP around in the window using keyframes (with Position = ).

In other words, it is just a shortcut to avoid the setting of the FCE Basic Motion controls for each clip.