What are the differences between Learn Mode and Test Mode?

Navigation (forwards and backwards) between steps
Green/red prompts when hovering over the correct/incorrect answer/hotspot
Help text/images are available on request
On some cases, the learn mode instructions will differ to the test mode instructions

No navigation between steps
No prompts, only shows green/red after answer has been selected
Help text/images only show up after 3 incorrect attempts
On some cases, the test mode instructions will differ to the learn mode instructions

A sim can be locked in either mode, or the learner can be given a choice to switch between the two.