What element is this in RISE?

Thanks John! In the editing options for Continue, I can have the Continue button show all the time (not what Tom's does), have it locked if the learner hasn't looked at all blocks above (when I try this = it shows a lock. Tom's does not/ Plus Tom's allows free movement - no locks on where you can go) or locked if learner hasn't completed previous block (I get that lock again).  Hmm - feeling stuck..