If you stretch a sample it will be looped.

The "repeat length" is the length in bars that will be used to loop the sample. The program automatically selects the most appropriate part of the sample for the loop. However, if you are dissatisfied, then you may change it here. When making changes it is possible to leave blank sections in the looped sound.

On the grid you can see that a sample is looped when there are vetical lines drawn on the sample (indicates the place where the sample is started over = looped).