114 L =  PEEK (37):SP$ = "": FOR X = 1 TO 20 -  LEN (ST$) / 2:SP$ = SP$ + " ": NEXT :ST$ = SP$ + ST$ + SP$: IF  LEN (ST$) / 2 <  >  INT ( LEN (ST$) / 2) THEN ST$ = ST$ + " "
 115  FOR X = 1 TO 20:PR$ =  LEFT$ (ST$,X) +  RIGHT$ (ST$,X): VTAB L: HTAB 21 - X: PRINT PR$: NEXT : RETURN 
 116 L =  PEEK (37):SP$ = "": FOR X = 1 TO 20 -  LEN (ST$) / 2:SP$ = SP$ + " ": NEXT :ST$ = SP$ + ST$ + SP$: IF  LEN (ST$) / 2 <  >  INT ( LEN (ST$) / 2) THEN ST$ = ST$ + " "
 117  FOR X = 1 TO 20:PR$ =  LEFT$ (ST$,X) +  RIGHT$ (ST$,X): VTAB L: HTAB 21 - X:Q =  PEEK ( - 16336) +  PEEK ( - 16336): PRINT PR$: NEXT : RETURN