You can embed a wavetable or sample into your preset when saving by clicking the button.

After clicking, the button changes to show that the feature is enabled.

Note: Alternatively, you can click the name of the wavetable or sample and choose Embed in Preset in the context menu.

In general, you should only consider doing this if you intend to share your preset with someone else.

Note that the option to embed a wavetable or sample into a preset is not available for factory-supplied content.