The MEMLEN command tells with bytes how many bytes are to be transferred.                        
MEMLEN bytes
                            Join BASIC 10Liner Contest with ugBASIC!
                            
                            An interesting competition is held at the beginning of each year: the 
                            BASIC 10Liner Contest.
                            It is possible to use ugBASIC to participate in the next 
                            "BASIC10Liner" competition, in the following categories:
                            
MEMLEN ↔ MLn
                        If you have found a problem with this keyword, if you think there is a bug or, more 
                        simply, you would like it to be improved, open an issue for this example on GitHub. 
                        Thank you!
                        
                        open an issue
                        BACK TO KEYWORDS