Sony SLV-D100 Operating Instructions Manual page 62

I[f various angles (multi-angles) for a scene
are recorded on the DVD, "&" appears in
the display when you press ANGLE during
playback. This means that you can change
the viewing angle.
Press ANGLE during playback.
The angle number appears
on
the display.
The number after the slash indicates the total
number of angles.
Press
repeatedly to select the angle number.
The scene changes to the selected angle.