Because of various reasons, including some differences in equipment calibration or just out of personal preference, a user may need to save their own custom W/L values:

Adjust your image to the desired W/L values. The current values will be shown at the bottom right in the viewer:

Click on “Preset editor” link shown below

The preset editor will open.

Click on the “+” sign to add a new preset. Current W/L values in viewer will be auto-populated. Enter a preferred name and save.

The new preset will be added to the existing list.

Note that you may optionally edit the existing presets to your liking or reset all to default.