Displaying a string is as easy as adding comment. Let's say you want to make the ultimate program, one that is displaying "Hello world!". Well, that's almost the entire program. The famous 'hello world' program is simply this in 4tH:
." Hello world!"
Compile this and it works. Yes, that's it! No declaration that this is the main function and it is beginning here and ending there. May be you think it looks funny on the display. Well, you can add a carriage return by adding the word 'CR'. So now it looks like:
." Hello world!" cr
Still pretty simple, huh?