Column-binary data storage
compresses data so that more than 80 items of data can be stored on
a single “virtual” punch card.
The ROW
w.
d informat
assigns the relative position of the punch in the field to a numeric
variable.
If the field that you
specify has more than one punch, then ROW
w.
d assigns the variable a
missing value and sets the automatic variable _ERROR_ to 1. If the
field has no punches, then ROW
w.
d assigns the variable a
missing value.
ROW
w.
d can
read fields across columns, continuing with row 12 of the new column
and going down through the rest of the rows. After ROW
w.
d reads
a field, the pointer moves to the next row.