What are these pins for?

#1

See attachment. What are those pins for. Can I connect something to it and use them in Scratch? What does MISO and MOSI mean?

pins.jpg842x747 204 KB

#2

Those pins are for extensions, and you could connect other boards for it, but those pins cannot be programmed in mBlock software. In this case, you could use Arduino to program those pins.
Here are the definition of MISO and MOSI.
MISO: Master Input,Slave Output
MOSI: Master Output,Slave Input

#3

That clears it up. Thanks for your swift response.

#4