whats the key next to space bar for?

[txaspeat]

as per title...whats the key for thats on the right hand side of the space bar,the one with a box with lines in it? when i press it i get a row of thunbnail pics with an edit option but i aint sure what to do with em????

 

[Tom T]

Brings up the clipboard, allows you to manipulate the images and data stored there.

Sent from my Galaxy Note 10.1

 

[Douvie]

I'm serious. I would never have guess it.