I think that I would like to use this system frequently. *

I found the system unnecessarily complex. *

I thought the system was easy to use. *

I think that I would need the support of a technical person to be able to use this system. *

I found the various functions in this system were well integrated. *

I thought there was too much inconsistency in this system. *

I would imagine that most people would learn to use this system very quickly. *

I found the system very cumbersome to use. *

I felt very confident using the system. *

I needed to learn a lot of things before I could get going with this system. *

It was clear how to annotate text. *

I wasn't sure what I should mark. *

I knew how to finish the game. *

I didn't understand what I was receiving points for. *

It was clear how the tile colours indicated which moves matched my opponents, and which were unmatched. *