I want to make one console like ( terminal ) from an input object. I want default display one text message :"for more options type help and press enter". When I press enter key I want to display something like"
Help list:
1. Run program
2. Display something
3. Bla bla bla.

When I type 1, 2 or 3 and press enter I want to display another text.. etc. If something is type wronh i want to give an error in console.
How can I do that, without making an button for that input ?