Terminal Emulator - IOS Show Commands
- More - is activated by the Spacebar & Enter

I have not worried too much about the mode functionality. Just watch the Router Prompt. It should show whether your session is in user (>) or privileged (#) mode. You will need to use the 'enable' command to view the help (?) option within privileged mode. If another mode appears - i.e. router(config)# or router(config-if)# -- understand that both are hierarchical in nature. In other words -- you can't get to there from here unless you know the mode/command flow structure. Reverse logic also applies to such commands as 'exit'. You back out one mode at a time. But as I said -- rather than worry about modal constraints -- I think it best that users at least become familar with the basic command set along with router prompts.

On the bright side of the road -- see how many supported 'show' commands you can send to the simulated router without an error.

Finally, if you spot an error -- that's a good thing. What you do about it is at the heart of what inter-networking is all about!