Returns the lowest array subscript for the specified array dimension.
v=LBOUND
(array_name[ ,dimension])
array_name is the name of the array of interest.
dimension is an integer value specifying the dimension in a multidimensional array. The default value is 1.
DIM a(50 TO 100) AS INTEGER
DIM box(1 TO 30, 3 TO 6) AS INTEGER
PRINT LBOUND(a)
PRINT LBOUND(box, 1), LBOUND(box, 2)
50
1 3