Does anyone know the meaning of"
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris posuere pharetra erat, sit amet varius augue vestibulum pharetra. Sed efficitur, felis vitae bibendum dapibus, erat sem pulvinar elit, sed facilisis nulla augue sed est. In fermentum placerat nulla. Donec tempor urna nisl, nec vulputate libero porttitor sit amet.
"?
If yes, where does it come from?

You could have found that easily by googling: https://en.wikipedia.org/wiki/Lorem_ipsum
Please, stay on topic, even in Café.