In the wave graph, the red vertical line shows the position of the loop start point and the light blue line the end point.
Split#/Waves - Here you have the list of all samples used by the current instrument.
Original parameters - This shows the values stored together with the sample.
Instrument Split parameters - This shows values stored with the split to override the standard values.
Used by these instruments -This shows which Instruments make use of this sample.
Sound - Press Play to listen to the original sample as stored. Activate the next button to listen to the sample looping between the loop points
Press Loop overlay to see the data for the loop overlapping. You can use together with a suitable zoom level to check that the transition is smooth.
The X-Ray graph may help to find a useful loop region as the density and structure of the loop start and end should be the same.