Controlling Text Input

( ccc )

( -- )

Begin a comment. 

\ rest-of-line

( -- )

Skip the rest of the line. 

ascii ccc

( -- char )

Get numerical value of first ASCII character of next word. 

key

( -- char )

Read a character from the assigned input device. 

key?

( -- flag )

True if a character has been entered from the input device..