Hey,
They are still wip, we need to spend more time on them to make them generic.
For height correction node, you basically invert the heightmap and blur it. Then you blend it in soft light mode.
For delighting node, we just blend output of multiple filters "AO cancelation"(in current SD version), a "normal rotator" to get a lighting angle and try to match the ambient light in our colormap (this is manual for now).
This will work only for ambient lighting and small soft shadows.
link to the normal rotator sbsar:
https://share.allegorithmic.com/libraries/16We will soon make generic version of this nodes with automation and improved features.
Stay tuned
Romain