'? CASE NOT [IF] 51 52 LOADR+ [THEN] DROP ( B152-153 )
'? FILL NOT [IF] 53 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
;