The graph allows the visualization of the sound wave. It is possible to zoom vertically and horizontally by holding a mouse right click:

Holding the left button of the mouse allows an horizontal move of the graph.

A green vertical bar indicates the start position of the loop (changeable by left click), a red bar indicates the position of the end of the loop (changeable by right click). A dotted line representing a wave portion is associated with each vertical bar, allowing us to visualize the superposition of the beginning and the end of the loop.

During playback, a white vertical bar runs the graph and indicates the playback position in real time.