M=NULL;

M=M0;

A movement, which is not really a movement (it doesn't have any C= ; parameters defining a train). It shows a background on the screen and is intended to show logos or descriptive texts for the following lines.

The time period the background is shown is modifiable through the TB = <WaitTime> ; and TE = <WaitTime> ; parameters (you can even start animations on the background picture).