Last little line changed.
The dbutton is like a Share-on-Facebook button, but for Steemit.
You can find one in action on the bottom of the page here: https://www.den-uijl.nl/electronics/knight-rider-scanning-lights/lights.shtml
Just click it and muck about with it. It is much like a mini authoring tool for Steemit, prefilled with a blurb about the page to be shared on Steemit, and with fixed tags.
When used, it wil put a posting like this one on Steemit: https://steemit.com/electronics/@ocrdu/20190526t104150906z-knight-rider-lights-for-model-cars-shared-on-steemit
Share-on-Steemit!