'? CASE NOT [IF] 48 49 LOADR+ [THEN] DROP ( B153-154 )
'? FILL NOT [IF] 50 LOAD+ [THEN] DROP ( B155 )
1 7 LOADR+
: BROWSE
0 ACC ! L
BEGIN
KEY CASE
'Q' OF EXIT ENDOF
'B' OF B ENDOF
'N' OF N ENDOF
_NUM
ENDCASE
AGAIN
;