How do I put text on the touch screen?

Type something like: XSCREEN 3 DISPLAY 1 PRINT "Text" REPEAT UNTIL 0

To add on to what Nathaniel said, You must ALWAYS Do XSCREEN 2 in your program to switch the Keypad on the Lower Screen to Nothing. Display 0 and Display 1 switches between what The Program is using. For examples, Display 1 Print "Hi SPSET 0, 1 Puts "Hi" and a sprite to the bottom screen. To switch back to the top screen, say DISPLAY 0.